java/13 : java.base/java/nio/ByteBuffer.java

ByteBuffer
https://openjdk.java.net/
GPLv2 + Classpath Exception
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// -- This file was mechanically generated: Do not edit! -- //

package java.nio;










import java.util.Objects;
import jdk.internal.util.ArraysSupport;

A byte buffer.
 This class defines six categories of operations upon
byte buffers:

   Absolute and relative get and put methods that read and write single bytes; 
   Absolute and relative bulk get methods that transfer contiguous sequences of bytes from this buffer into an array; 
   Absolute and relative bulk put methods that transfer contiguous sequences of bytes from a byte array or some other byte buffer into this buffer; 
   Absolute and relative get and put methods that read and write values of other primitive types, translating them to and from sequences of bytes in a particular byte order; 
   Methods for creating view buffers,
  which allow a byte buffer to be viewed as a buffer containing values of
  some other primitive type; and 
   A method for compacting a byte buffer. 

 Byte buffers can be created either by allocation, which allocates space for the buffer's content, or by wrapping an existing byte array into a buffer. 
 Direct vs. non-direct buffers 
 A byte buffer is either direct or non-direct.  Given a
direct byte buffer, the Java virtual machine will make a best effort to
perform native I/O operations directly upon it.  That is, it will attempt to
avoid copying the buffer's content to (or from) an intermediate buffer
before (or after) each invocation of one of the underlying operating
system's native I/O operations.
 A direct byte buffer may be created by invoking the allocateDirect factory method of this class. The buffers returned by this method typically have somewhat higher allocation and deallocation costs than non-direct buffers. The contents of direct buffers may reside outside of the normal garbage-collected heap, and so their impact upon the memory footprint of an application might not be obvious. It is therefore recommended that direct buffers be allocated primarily for large, long-lived buffers that are subject to the underlying system's native I/O operations. In general it is best to allocate direct buffers only when they yield a measureable gain in program performance. 
 A direct byte buffer may also be created by mapping a region of a file directly into memory. An implementation of the Java platform may optionally support the creation of direct byte buffers from native code via JNI. If an instance of one of these kinds of buffers refers to an inaccessible region of memory then an attempt to access that region will not change the buffer's content and will cause an unspecified exception to be thrown either at the time of the access or at some later time. 
 Whether a byte buffer is direct or non-direct may be determined by invoking its isDirect method. This method is provided so that explicit buffer management can be done in performance-critical code. 
 Access to binary data 
 This class defines methods for reading and writing values of all other primitive types, except boolean. Primitive values are translated to (or from) sequences of bytes according to the buffer's current byte order, which may be retrieved and modified via the order methods. Specific byte orders are represented by instances of the ByteOrder class. The initial order of a byte buffer is always BIG_ENDIAN. 
 For access to heterogeneous binary data, that is, sequences of values of
different types, this class defines a family of absolute and relative
get and put methods for each type.  For 32-bit floating-point
values, for example, this class defines:
float getFloat() float getFloat(int index) void putFloat(float f) void putFloat(int index, float f)
 Corresponding methods are defined for the types char,
short, int, long, and double. The index parameters of the absolute get and put methods are in terms of
bytes rather than of the type being read or written.

 For access to homogeneous binary data, that is, sequences of values of
the same type, this class defines methods that can create views of a
given byte buffer.  A view buffer is simply another buffer whose content is backed by the byte buffer. Changes to the byte buffer's content will be visible in the view buffer, and vice versa; the two buffers' position, limit, and mark values are independent. The asFloatBuffer method, for example, creates an instance of the FloatBuffer class that is backed by the byte buffer upon which the method is invoked. Corresponding view-creation methods are defined for the types char, short, int, long, and double. 
 View buffers have three important advantages over the families of
type-specific get and put methods described above:

   A view buffer is indexed not in terms of bytes but rather in terms
  of the type-specific size of its values;  
   A view buffer provides relative bulk get and put
  methods that can transfer contiguous sequences of values between a buffer
  and an array or some other buffer of the same type; and  
   A view buffer is potentially much more efficient because it will
  be direct if, and only if, its backing byte buffer is direct.  

 The byte order of a view buffer is fixed to be that of its byte buffer
at the time that the view is created.  
 Invocation chaining 
 Methods in this class that do not otherwise have a value to return are
specified to return the buffer upon which they are invoked.  This allows
method invocations to be chained.
The sequence of statements
bb.putInt(0xCAFEBABE);
bb.putShort(3);
bb.putShort(45);
can, for example, be replaced by the single statement
bb.putInt(0xCAFEBABE).putShort(3).putShort(45);
Author: Mark Reinhold, JSR-51 Expert Group
Since: 1.4/**
 * A byte buffer.
 *
 * <p> This class defines six categories of operations upon
 * byte buffers:
 *
 * <ul>
 *
 *   <li><p> Absolute and relative {@link #get() <i>get</i>} and
 *   {@link #put(byte) <i>put</i>} methods that read and write
 *   single bytes; </p></li>
 *
 *   <li><p> Absolute and relative {@link #get(byte[]) <i>bulk get</i>}
 *   methods that transfer contiguous sequences of bytes from this buffer
 *   into an array; </p></li>
 *
 *   <li><p> Absolute and relative {@link #put(byte[]) <i>bulk put</i>}
 *   methods that transfer contiguous sequences of bytes from a
 *   byte array or some other byte
 *   buffer into this buffer; </p></li>
 *

 *
 *   <li><p> Absolute and relative {@link #getChar() <i>get</i>}
 *   and {@link #putChar(char) <i>put</i>} methods that read and
 *   write values of other primitive types, translating them to and from
 *   sequences of bytes in a particular byte order; </p></li>
 *
 *   <li><p> Methods for creating <i><a href="#views">view buffers</a></i>,
 *   which allow a byte buffer to be viewed as a buffer containing values of
 *   some other primitive type; and </p></li>
 *

 *
 *   <li><p> A method for {@link #compact compacting}
 *   a byte buffer.  </p></li>
 *
 * </ul>
 *
 * <p> Byte buffers can be created either by {@link #allocate
 * <i>allocation</i>}, which allocates space for the buffer's
 *

 *
 * content, or by {@link #wrap(byte[]) <i>wrapping</i>} an
 * existing byte array  into a buffer.
 *







 *

 *
 * <a id="direct"></a>
 * <h2> Direct <i>vs.</i> non-direct buffers </h2>
 *
 * <p> A byte buffer is either <i>direct</i> or <i>non-direct</i>.  Given a
 * direct byte buffer, the Java virtual machine will make a best effort to
 * perform native I/O operations directly upon it.  That is, it will attempt to
 * avoid copying the buffer's content to (or from) an intermediate buffer
 * before (or after) each invocation of one of the underlying operating
 * system's native I/O operations.
 *
 * <p> A direct byte buffer may be created by invoking the {@link
 * #allocateDirect(int) allocateDirect} factory method of this class.  The
 * buffers returned by this method typically have somewhat higher allocation
 * and deallocation costs than non-direct buffers.  The contents of direct
 * buffers may reside outside of the normal garbage-collected heap, and so
 * their impact upon the memory footprint of an application might not be
 * obvious.  It is therefore recommended that direct buffers be allocated
 * primarily for large, long-lived buffers that are subject to the underlying
 * system's native I/O operations.  In general it is best to allocate direct
 * buffers only when they yield a measureable gain in program performance.
 *
 * <p> A direct byte buffer may also be created by {@link
 * java.nio.channels.FileChannel#map mapping} a region of a file
 * directly into memory.  An implementation of the Java platform may optionally
 * support the creation of direct byte buffers from native code via JNI.  If an
 * instance of one of these kinds of buffers refers to an inaccessible region
 * of memory then an attempt to access that region will not change the buffer's
 * content and will cause an unspecified exception to be thrown either at the
 * time of the access or at some later time.
 *
 * <p> Whether a byte buffer is direct or non-direct may be determined by
 * invoking its {@link #isDirect isDirect} method.  This method is provided so
 * that explicit buffer management can be done in performance-critical code.
 *
 *
 * <a id="bin"></a>
 * <h2> Access to binary data </h2>
 *
 * <p> This class defines methods for reading and writing values of all other
 * primitive types, except {@code boolean}.  Primitive values are translated
 * to (or from) sequences of bytes according to the buffer's current byte
 * order, which may be retrieved and modified via the {@link #order order}
 * methods.  Specific byte orders are represented by instances of the {@link
 * ByteOrder} class.  The initial order of a byte buffer is always {@link
 * ByteOrder#BIG_ENDIAN BIG_ENDIAN}.
 *
 * <p> For access to heterogeneous binary data, that is, sequences of values of
 * different types, this class defines a family of absolute and relative
 * <i>get</i> and <i>put</i> methods for each type.  For 32-bit floating-point
 * values, for example, this class defines:
 *
 * <blockquote><pre>
 * float  {@link #getFloat()}
 * float  {@link #getFloat(int) getFloat(int index)}
 *  void  {@link #putFloat(float) putFloat(float f)}
 *  void  {@link #putFloat(int,float) putFloat(int index, float f)}</pre></blockquote>
 *
 * <p> Corresponding methods are defined for the types {@code char,
 * short, int, long}, and {@code double}.  The index
 * parameters of the absolute <i>get</i> and <i>put</i> methods are in terms of
 * bytes rather than of the type being read or written.
 *
 * <a id="views"></a>
 *
 * <p> For access to homogeneous binary data, that is, sequences of values of
 * the same type, this class defines methods that can create <i>views</i> of a
 * given byte buffer.  A <i>view buffer</i> is simply another buffer whose
 * content is backed by the byte buffer.  Changes to the byte buffer's content
 * will be visible in the view buffer, and vice versa; the two buffers'
 * position, limit, and mark values are independent.  The {@link
 * #asFloatBuffer() asFloatBuffer} method, for example, creates an instance of
 * the {@link FloatBuffer} class that is backed by the byte buffer upon which
 * the method is invoked.  Corresponding view-creation methods are defined for
 * the types {@code char, short, int, long}, and {@code double}.
 *
 * <p> View buffers have three important advantages over the families of
 * type-specific <i>get</i> and <i>put</i> methods described above:
 *
 * <ul>
 *
 *   <li><p> A view buffer is indexed not in terms of bytes but rather in terms
 *   of the type-specific size of its values;  </p></li>
 *
 *   <li><p> A view buffer provides relative bulk <i>get</i> and <i>put</i>
 *   methods that can transfer contiguous sequences of values between a buffer
 *   and an array or some other buffer of the same type; and  </p></li>
 *
 *   <li><p> A view buffer is potentially much more efficient because it will
 *   be direct if, and only if, its backing byte buffer is direct.  </p></li>
 *
 * </ul>
 *
 * <p> The byte order of a view buffer is fixed to be that of its byte buffer
 * at the time that the view is created.  </p>
 *

*











*










 *

 * <h2> Invocation chaining </h2>

 *
 * <p> Methods in this class that do not otherwise have a value to return are
 * specified to return the buffer upon which they are invoked.  This allows
 * method invocations to be chained.
 *

 *
 * The sequence of statements
 *
 * <blockquote><pre>
 * bb.putInt(0xCAFEBABE);
 * bb.putShort(3);
 * bb.putShort(45);</pre></blockquote>
 *
 * can, for example, be replaced by the single statement
 *
 * <blockquote><pre>
 * bb.putInt(0xCAFEBABE).putShort(3).putShort(45);</pre></blockquote>
 *

















 *
 *
 * @author Mark Reinhold
 * @author JSR-51 Expert Group
 * @since 1.4
 */

public abstract class ByteBuffer
    extends Buffer
    implements Comparable<ByteBuffer>
{

    // These fields are declared here rather than in Heap-X-Buffer in order to
    // reduce the number of virtual method invocations needed to access these
    // values, which is especially costly when coding small buffers.
    //
    final byte[] hb;                  // Non-null only for heap buffers
    final int offset;
    boolean isReadOnly;

    // Creates a new buffer with the given mark, position, limit, capacity,
    // backing array, and array offset
    //
    ByteBuffer(int mark, int pos, int lim, int cap,   // package-private
                 byte[] hb, int offset)
    {
        super(mark, pos, lim, cap);
        this.hb = hb;
        this.offset = offset;
    }

    // Creates a new buffer with the given mark, position, limit, and capacity
    //
    ByteBuffer(int mark, int pos, int lim, int cap) { // package-private
        this(mark, pos, lim, cap, null, 0);
    }

    @Override
    Object base() {
        return hb;
    }



    Allocates a new direct byte buffer.
 The new buffer's position will be zero, its limit will be its capacity, its mark will be undefined, each of its elements will be initialized to zero, and its byte order will be BIG_ENDIAN. Whether or not it has a backing array is unspecified. 
Params: capacity – 
        The new buffer's capacity, in bytes
Throws: IllegalArgumentException –  If the capacity is a negative integer
Returns:  The new byte buffer/**
     * Allocates a new direct byte buffer.
     *
     * <p> The new buffer's position will be zero, its limit will be its
     * capacity, its mark will be undefined, each of its elements will be
     * initialized to zero, and its byte order will be
     * {@link ByteOrder#BIG_ENDIAN BIG_ENDIAN}.  Whether or not it has a
     * {@link #hasArray backing array} is unspecified.
     *
     * @param  capacity
     *         The new buffer's capacity, in bytes
     *
     * @return  The new byte buffer
     *
     * @throws  IllegalArgumentException
     *          If the {@code capacity} is a negative integer
     */
    public static ByteBuffer allocateDirect(int capacity) {
        return new DirectByteBuffer(capacity);
    }



    Allocates a new byte buffer.
 The new buffer's position will be zero, its limit will be its capacity, its mark will be undefined, each of its elements will be initialized to zero, and its byte order will be BIG_ENDIAN. It will have a backing array, and its array offset will be zero. 
Params: capacity – 
        The new buffer's capacity, in bytes
Throws: IllegalArgumentException –  If the capacity is a negative integer
Returns:  The new byte buffer/**
     * Allocates a new byte buffer.
     *
     * <p> The new buffer's position will be zero, its limit will be its
     * capacity, its mark will be undefined, each of its elements will be
     * initialized to zero, and its byte order will be

     * {@link ByteOrder#BIG_ENDIAN BIG_ENDIAN}.




     * It will have a {@link #array backing array}, and its
     * {@link #arrayOffset array offset} will be zero.
     *
     * @param  capacity
     *         The new buffer's capacity, in bytes
     *
     * @return  The new byte buffer
     *
     * @throws  IllegalArgumentException
     *          If the {@code capacity} is a negative integer
     */
    public static ByteBuffer allocate(int capacity) {
        if (capacity < 0)
            throw createCapacityException(capacity);
        return new HeapByteBuffer(capacity, capacity);
    }

    Wraps a byte array into a buffer.
 The new buffer will be backed by the given byte array; that is, modifications to the buffer will cause the array to be modified and vice versa. The new buffer's capacity will be array.length, its position will be offset, its limit will be offset + length, its mark will be undefined, and its byte order will be BIG_ENDIAN. Its backing array will be the given array, and its array offset will be zero. 
Params: array – 
        The array that will back the new buffer
offset –  The offset of the subarray to be used; must be non-negative and no larger than array.length. The new buffer's position will be set to this value.
length –  The length of the subarray to be used; must be non-negative and no larger than array.length - offset. The new buffer's limit will be set to offset + length.
Throws: IndexOutOfBoundsException –  If the preconditions on the offset and length parameters do not hold
Returns:  The new byte buffer/**
     * Wraps a byte array into a buffer.
     *
     * <p> The new buffer will be backed by the given byte array;
     * that is, modifications to the buffer will cause the array to be modified
     * and vice versa.  The new buffer's capacity will be
     * {@code array.length}, its position will be {@code offset}, its limit
     * will be {@code offset + length}, its mark will be undefined, and its
     * byte order will be

     * {@link ByteOrder#BIG_ENDIAN BIG_ENDIAN}.




     * Its {@link #array backing array} will be the given array, and
     * its {@link #arrayOffset array offset} will be zero.  </p>
     *
     * @param  array
     *         The array that will back the new buffer
     *
     * @param  offset
     *         The offset of the subarray to be used; must be non-negative and
     *         no larger than {@code array.length}.  The new buffer's position
     *         will be set to this value.
     *
     * @param  length
     *         The length of the subarray to be used;
     *         must be non-negative and no larger than
     *         {@code array.length - offset}.
     *         The new buffer's limit will be set to {@code offset + length}.
     *
     * @return  The new byte buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If the preconditions on the {@code offset} and {@code length}
     *          parameters do not hold
     */
    public static ByteBuffer wrap(byte[] array,
                                    int offset, int length)
    {
        try {
            return new HeapByteBuffer(array, offset, length);
        } catch (IllegalArgumentException x) {
            throw new IndexOutOfBoundsException();
        }
    }

    Wraps a byte array into a buffer.
 The new buffer will be backed by the given byte array; that is, modifications to the buffer will cause the array to be modified and vice versa. The new buffer's capacity and limit will be array.length, its position will be zero, its mark will be undefined, and its byte order will be BIG_ENDIAN. Its backing array will be the given array, and its array offset will be zero. 
Params: array – 
        The array that will back this buffer
Returns:  The new byte buffer/**
     * Wraps a byte array into a buffer.
     *
     * <p> The new buffer will be backed by the given byte array;
     * that is, modifications to the buffer will cause the array to be modified
     * and vice versa.  The new buffer's capacity and limit will be
     * {@code array.length}, its position will be zero, its mark will be
     * undefined, and its byte order will be

     * {@link ByteOrder#BIG_ENDIAN BIG_ENDIAN}.




     * Its {@link #array backing array} will be the given array, and its
     * {@link #arrayOffset array offset} will be zero.  </p>
     *
     * @param  array
     *         The array that will back this buffer
     *
     * @return  The new byte buffer
     */
    public static ByteBuffer wrap(byte[] array) {
        return wrap(array, 0, array.length);
    }





























































































    Creates a new byte buffer whose content is a shared subsequence of
this buffer's content.
 The content of the new buffer will start at this buffer's current
position.  Changes to this buffer's content will be visible in the new
buffer, and vice versa; the two buffers' position, limit, and mark
values will be independent.
 The new buffer's position will be zero, its capacity and its limit will be the number of bytes remaining in this buffer, its mark will be undefined, and its byte order will be BIG_ENDIAN. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only. 
See Also: alignedSlice(int)
Returns:  The new byte buffer/**
     * Creates a new byte buffer whose content is a shared subsequence of
     * this buffer's content.
     *
     * <p> The content of the new buffer will start at this buffer's current
     * position.  Changes to this buffer's content will be visible in the new
     * buffer, and vice versa; the two buffers' position, limit, and mark
     * values will be independent.
     *
     * <p> The new buffer's position will be zero, its capacity and its limit
     * will be the number of bytes remaining in this buffer, its mark will be
     * undefined, and its byte order will be

     * {@link ByteOrder#BIG_ENDIAN BIG_ENDIAN}.



     * The new buffer will be direct if, and only if, this buffer is direct, and
     * it will be read-only if, and only if, this buffer is read-only.  </p>
     *
     * @return  The new byte buffer

     *
     * @see #alignedSlice(int)

     */
    @Override
    public abstract ByteBuffer slice();

    Creates a new byte buffer whose content is a shared subsequence of
this buffer's content.
 The content of the new buffer will start at position index in this buffer, and will contain length elements. Changes to this buffer's content will be visible in the new buffer, and vice versa; the two buffers' position, limit, and mark values will be independent. 
 The new buffer's position will be zero, its capacity and its limit will be length, its mark will be undefined, and its byte order will be BIG_ENDIAN. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only. 
Params: index –  The position in this buffer at which the content of the new buffer will start; must be non-negative and no larger than limit()
length –  The number of elements the new buffer will contain; must be non-negative and no larger than limit() - index
Throws: IndexOutOfBoundsException –  If index is negative or greater than limit(), length is negative, or length > limit() - index
Returns:  The new buffer
Since: 13/**
     * Creates a new byte buffer whose content is a shared subsequence of
     * this buffer's content.
     *
     * <p> The content of the new buffer will start at position {@code index}
     * in this buffer, and will contain {@code length} elements. Changes to
     * this buffer's content will be visible in the new buffer, and vice versa;
     * the two buffers' position, limit, and mark values will be independent.
     *
     * <p> The new buffer's position will be zero, its capacity and its limit
     * will be {@code length}, its mark will be undefined, and its byte order
     * will be

     * {@link ByteOrder#BIG_ENDIAN BIG_ENDIAN}.



     * The new buffer will be direct if, and only if, this buffer is direct,
     * and it will be read-only if, and only if, this buffer is read-only. </p>
     *
     * @param   index
     *          The position in this buffer at which the content of the new
     *          buffer will start; must be non-negative and no larger than
     *          {@link #limit() limit()}
     *
     * @param   length
     *          The number of elements the new buffer will contain; must be
     *          non-negative and no larger than {@code limit() - index}
     *
     * @return  The new buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative or greater than {@code limit()},
     *          {@code length} is negative, or {@code length > limit() - index}
     *
     * @since 13
     */
    @Override
    public abstract ByteBuffer slice(int index, int length);

    Creates a new byte buffer that shares this buffer's content.
 The content of the new buffer will be that of this buffer.  Changes
to this buffer's content will be visible in the new buffer, and vice
versa; the two buffers' position, limit, and mark values will be
independent.
 The new buffer's capacity, limit, position, and mark values will be identical to those of this buffer, and its byte order will be BIG_ENDIAN. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only. 
Returns:  The new byte buffer/**
     * Creates a new byte buffer that shares this buffer's content.
     *
     * <p> The content of the new buffer will be that of this buffer.  Changes
     * to this buffer's content will be visible in the new buffer, and vice
     * versa; the two buffers' position, limit, and mark values will be
     * independent.
     *
     * <p> The new buffer's capacity, limit, position,

     * and mark values will be identical to those of this buffer, and its byte
     * order will be {@link ByteOrder#BIG_ENDIAN BIG_ENDIAN}.



     * The new buffer will be direct if, and only if, this buffer is direct, and
     * it will be read-only if, and only if, this buffer is read-only.  </p>
     *
     * @return  The new byte buffer
     */
    @Override
    public abstract ByteBuffer duplicate();

    Creates a new, read-only byte buffer that shares this buffer's
content.
 The content of the new buffer will be that of this buffer.  Changes
to this buffer's content will be visible in the new buffer; the new
buffer itself, however, will be read-only and will not allow the shared
content to be modified.  The two buffers' position, limit, and mark
values will be independent.
 The new buffer's capacity, limit, position, and mark values will be identical to those of this buffer, and its byte order will be BIG_ENDIAN. 
 If this buffer is itself read-only then this method behaves in exactly the same way as the duplicate method. 
Returns:  The new, read-only byte buffer/**
     * Creates a new, read-only byte buffer that shares this buffer's
     * content.
     *
     * <p> The content of the new buffer will be that of this buffer.  Changes
     * to this buffer's content will be visible in the new buffer; the new
     * buffer itself, however, will be read-only and will not allow the shared
     * content to be modified.  The two buffers' position, limit, and mark
     * values will be independent.
     *
     * <p> The new buffer's capacity, limit, position,

     * and mark values will be identical to those of this buffer, and its byte
     * order will be {@link ByteOrder#BIG_ENDIAN BIG_ENDIAN}.



     *
     * <p> If this buffer is itself read-only then this method behaves in
     * exactly the same way as the {@link #duplicate duplicate} method.  </p>
     *
     * @return  The new, read-only byte buffer
     */
    public abstract ByteBuffer asReadOnlyBuffer();


    // -- Singleton get/put methods --

    Relative get method.  Reads the byte at this buffer's
current position, and then increments the position.
Throws: BufferUnderflowException – 
         If the buffer's current position is not smaller than its limit
Returns:  The byte at the buffer's current position/**
     * Relative <i>get</i> method.  Reads the byte at this buffer's
     * current position, and then increments the position.
     *
     * @return  The byte at the buffer's current position
     *
     * @throws  BufferUnderflowException
     *          If the buffer's current position is not smaller than its limit
     */
    public abstract byte get();

    Relative put method  (optional operation).
 Writes the given byte into this buffer at the current
position, and then increments the position. 
Params: b – 
        The byte to be written
Throws: BufferOverflowException – 
         If this buffer's current position is not smaller than its limit
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Relative <i>put</i> method&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes the given byte into this buffer at the current
     * position, and then increments the position. </p>
     *
     * @param  b
     *         The byte to be written
     *
     * @return  This buffer
     *
     * @throws  BufferOverflowException
     *          If this buffer's current position is not smaller than its limit
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer put(byte b);

    Absolute get method.  Reads the byte at the given
index.
Params: index – 
        The index from which the byte will be read
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit
Returns:  The byte at the given index/**
     * Absolute <i>get</i> method.  Reads the byte at the given
     * index.
     *
     * @param  index
     *         The index from which the byte will be read
     *
     * @return  The byte at the given index
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit
     */
    public abstract byte get(int index);














    Absolute put method  (optional operation).
 Writes the given byte into this buffer at the given
index. 
Params: index – 
        The index at which the byte will be written
b – 
        The byte value to be written
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Absolute <i>put</i> method&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes the given byte into this buffer at the given
     * index. </p>
     *
     * @param  index
     *         The index at which the byte will be written
     *
     * @param  b
     *         The byte value to be written
     *
     * @return  This buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer put(int index, byte b);


    // -- Bulk get operations --

    Relative bulk get method.
 This method transfers bytes from this buffer into the given destination array. If there are fewer bytes remaining in the buffer than are required to satisfy the request, that is, if length > remaining(), then no bytes are transferred and a BufferUnderflowException is thrown. 
 Otherwise, this method copies length bytes from this buffer into the given array, starting at the current position of this buffer and at the given offset in the array. The position of this buffer is then incremented by length. 
 In other words, an invocation of this method of the form
src.get(dst, off, len) has exactly the same effect as
the loop

    for (int i = off; i < off + len; i++)
        dst[i] = src.get();

except that it first checks that there are sufficient bytes in
this buffer and it is potentially much more efficient.
Params: dst – 
        The array into which bytes are to be written
offset –  The offset within the array of the first byte to be written; must be non-negative and no larger than dst.length
length –  The maximum number of bytes to be written to the given array; must be non-negative and no larger than dst.length - offset
Throws: BufferUnderflowException –  If there are fewer than length bytes remaining in this buffer
IndexOutOfBoundsException –  If the preconditions on the offset and length parameters do not hold
Returns:  This buffer/**
     * Relative bulk <i>get</i> method.
     *
     * <p> This method transfers bytes from this buffer into the given
     * destination array.  If there are fewer bytes remaining in the
     * buffer than are required to satisfy the request, that is, if
     * {@code length}&nbsp;{@code >}&nbsp;{@code remaining()}, then no
     * bytes are transferred and a {@link BufferUnderflowException} is
     * thrown.
     *
     * <p> Otherwise, this method copies {@code length} bytes from this
     * buffer into the given array, starting at the current position of this
     * buffer and at the given offset in the array.  The position of this
     * buffer is then incremented by {@code length}.
     *
     * <p> In other words, an invocation of this method of the form
     * <code>src.get(dst,&nbsp;off,&nbsp;len)</code> has exactly the same effect as
     * the loop
     *
     * <pre>{@code
     *     for (int i = off; i < off + len; i++)
     *         dst[i] = src.get();
     * }</pre>
     *
     * except that it first checks that there are sufficient bytes in
     * this buffer and it is potentially much more efficient.
     *
     * @param  dst
     *         The array into which bytes are to be written
     *
     * @param  offset
     *         The offset within the array of the first byte to be
     *         written; must be non-negative and no larger than
     *         {@code dst.length}
     *
     * @param  length
     *         The maximum number of bytes to be written to the given
     *         array; must be non-negative and no larger than
     *         {@code dst.length - offset}
     *
     * @return  This buffer
     *
     * @throws  BufferUnderflowException
     *          If there are fewer than {@code length} bytes
     *          remaining in this buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If the preconditions on the {@code offset} and {@code length}
     *          parameters do not hold
     */
    public ByteBuffer get(byte[] dst, int offset, int length) {
        Objects.checkFromIndexSize(offset, length, dst.length);
        if (length > remaining())
            throw new BufferUnderflowException();
        int end = offset + length;
        for (int i = offset; i < end; i++)
            dst[i] = get();
        return this;
    }

    Relative bulk get method.
 This method transfers bytes from this buffer into the given destination array. An invocation of this method of the form src.get(a) behaves in exactly the same way as the invocation 
    src.get(a, 0, a.length) 
Params: dst – 
         The destination array
Throws: BufferUnderflowException –  If there are fewer than length bytes remaining in this buffer
Returns:  This buffer/**
     * Relative bulk <i>get</i> method.
     *
     * <p> This method transfers bytes from this buffer into the given
     * destination array.  An invocation of this method of the form
     * {@code src.get(a)} behaves in exactly the same way as the invocation
     *
     * <pre>
     *     src.get(a, 0, a.length) </pre>
     *
     * @param   dst
     *          The destination array
     *
     * @return  This buffer
     *
     * @throws  BufferUnderflowException
     *          If there are fewer than {@code length} bytes
     *          remaining in this buffer
     */
    public ByteBuffer get(byte[] dst) {
        return get(dst, 0, dst.length);
    }

    Absolute bulk get method.
 This method transfers length bytes from this buffer into the given array, starting at the given index in this buffer and at the given offset in the array. The position of this buffer is unchanged. 
 An invocation of this method of the form
src.get(index, dst, offset, length)
has exactly the same effect as the following loop except that it first
checks the consistency of the supplied parameters and it is potentially
much more efficient:

    for (int i = offset, j = index; i < offset + length; i++, j++)
        dst[i] = src.get(j);

Params: index –  The index in this buffer from which the first byte will be read; must be non-negative and less than limit()
dst – 
        The destination array
offset –  The offset within the array of the first byte to be written; must be non-negative and less than dst.length
length –  The number of bytes to be written to the given array; must be non-negative and no larger than the smaller of limit() - index and dst.length - offset
Throws: IndexOutOfBoundsException –  If the preconditions on the index, offset, and length parameters do not hold
Returns:  This buffer
Since: 13/**
     * Absolute bulk <i>get</i> method.
     *
     * <p> This method transfers {@code length} bytes from this
     * buffer into the given array, starting at the given index in this
     * buffer and at the given offset in the array.  The position of this
     * buffer is unchanged.
     *
     * <p> An invocation of this method of the form
     * <code>src.get(index,&nbsp;dst,&nbsp;offset,&nbsp;length)</code>
     * has exactly the same effect as the following loop except that it first
     * checks the consistency of the supplied parameters and it is potentially
     * much more efficient:
     *
     * <pre>{@code
     *     for (int i = offset, j = index; i < offset + length; i++, j++)
     *         dst[i] = src.get(j);
     * }</pre>
     *
     * @param  index
     *         The index in this buffer from which the first byte will be
     *         read; must be non-negative and less than {@code limit()}
     *
     * @param  dst
     *         The destination array
     *
     * @param  offset
     *         The offset within the array of the first byte to be
     *         written; must be non-negative and less than
     *         {@code dst.length}
     *
     * @param  length
     *         The number of bytes to be written to the given array;
     *         must be non-negative and no larger than the smaller of
     *         {@code limit() - index} and {@code dst.length - offset}
     *
     * @return  This buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If the preconditions on the {@code index}, {@code offset}, and
     *          {@code length} parameters do not hold
     *
     * @since 13
     */
    public ByteBuffer get(int index, byte[] dst, int offset, int length) {
        Objects.checkFromIndexSize(index, length, limit());
        Objects.checkFromIndexSize(offset, length, dst.length);
        int end = offset + length;
        for (int i = offset, j = index; i < end; i++, j++)
            dst[i] = get(j);
        return this;
    }

    Absolute bulk get method.
 This method transfers bytes from this buffer into the given
destination array.  The position of this buffer is unchanged.  An
invocation of this method of the form
src.get(index, dst) behaves in exactly the same
way as the invocation:
    src.get(index, dst, 0, dst.length) 
Params: index –  The index in this buffer from which the first byte will be read; must be non-negative and less than limit()
dst – 
        The destination array
Throws: IndexOutOfBoundsException –  If index is negative, not smaller than limit(), or limit() - index < dst.length
Returns:  This buffer
Since: 13/**
     * Absolute bulk <i>get</i> method.
     *
     * <p> This method transfers bytes from this buffer into the given
     * destination array.  The position of this buffer is unchanged.  An
     * invocation of this method of the form
     * <code>src.get(index,&nbsp;dst)</code> behaves in exactly the same
     * way as the invocation:
     *
     * <pre>
     *     src.get(index, dst, 0, dst.length) </pre>
     *
     * @param  index
     *         The index in this buffer from which the first byte will be
     *         read; must be non-negative and less than {@code limit()}
     *
     * @param  dst
     *         The destination array
     *
     * @return  This buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative, not smaller than {@code limit()},
     *          or {@code limit() - index < dst.length}
     *
     * @since 13
     */
    public ByteBuffer get(int index, byte[] dst) {
        return get(index, dst, 0, dst.length);
    }

    // -- Bulk put operations --

    Relative bulk put method  (optional operation).
 This method transfers the bytes remaining in the given source buffer into this buffer. If there are more bytes remaining in the source buffer than in this buffer, that is, if src.remaining() > remaining(), then no bytes are transferred and a BufferOverflowException is thrown. 
 Otherwise, this method copies
n = src.remaining() bytes from the given buffer into this buffer, starting at each buffer's current position. The positions of both buffers are then incremented by n.
 In other words, an invocation of this method of the form dst.put(src) has exactly the same effect as the loop 
    while (src.hasRemaining())
        dst.put(src.get()); 
except that it first checks that there is sufficient space in this
buffer and it is potentially much more efficient.
Params: src – 
        The source buffer from which bytes are to be read;
        must not be this buffer
Throws: BufferOverflowException – 
         If there is insufficient space in this buffer
         for the remaining bytes in the source buffer
IllegalArgumentException – 
         If the source buffer is this buffer
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Relative bulk <i>put</i> method&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> This method transfers the bytes remaining in the given source
     * buffer into this buffer.  If there are more bytes remaining in the
     * source buffer than in this buffer, that is, if
     * {@code src.remaining()}&nbsp;{@code >}&nbsp;{@code remaining()},
     * then no bytes are transferred and a {@link
     * BufferOverflowException} is thrown.
     *
     * <p> Otherwise, this method copies
     * <i>n</i>&nbsp;=&nbsp;{@code src.remaining()} bytes from the given
     * buffer into this buffer, starting at each buffer's current position.
     * The positions of both buffers are then incremented by <i>n</i>.
     *
     * <p> In other words, an invocation of this method of the form
     * {@code dst.put(src)} has exactly the same effect as the loop
     *
     * <pre>
     *     while (src.hasRemaining())
     *         dst.put(src.get()); </pre>
     *
     * except that it first checks that there is sufficient space in this
     * buffer and it is potentially much more efficient.
     *
     * @param  src
     *         The source buffer from which bytes are to be read;
     *         must not be this buffer
     *
     * @return  This buffer
     *
     * @throws  BufferOverflowException
     *          If there is insufficient space in this buffer
     *          for the remaining bytes in the source buffer
     *
     * @throws  IllegalArgumentException
     *          If the source buffer is this buffer
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public ByteBuffer put(ByteBuffer src) {
        if (src == this)
            throw createSameBufferException();
        if (isReadOnly())
            throw new ReadOnlyBufferException();
        int n = src.remaining();
        if (n > remaining())
            throw new BufferOverflowException();
        for (int i = 0; i < n; i++)
            put(src.get());
        return this;
    }

    Relative bulk put method  (optional operation).
 This method transfers bytes into this buffer from the given source array. If there are more bytes to be copied from the array than remain in this buffer, that is, if length > remaining(), then no bytes are transferred and a BufferOverflowException is thrown. 
 Otherwise, this method copies length bytes from the given array into this buffer, starting at the given offset in the array and at the current position of this buffer. The position of this buffer is then incremented by length. 
 In other words, an invocation of this method of the form
dst.put(src, off, len) has exactly the same effect as
the loop

    for (int i = off; i < off + len; i++)
        dst.put(src[i]);

except that it first checks that there is sufficient space in this
buffer and it is potentially much more efficient.
Params: src – 
        The array from which bytes are to be read
offset –  The offset within the array of the first byte to be read; must be non-negative and no larger than src.length
length –  The number of bytes to be read from the given array; must be non-negative and no larger than src.length - offset
Throws: BufferOverflowException – 
         If there is insufficient space in this buffer
IndexOutOfBoundsException –  If the preconditions on the offset and length parameters do not hold
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Relative bulk <i>put</i> method&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> This method transfers bytes into this buffer from the given
     * source array.  If there are more bytes to be copied from the array
     * than remain in this buffer, that is, if
     * {@code length}&nbsp;{@code >}&nbsp;{@code remaining()}, then no
     * bytes are transferred and a {@link BufferOverflowException} is
     * thrown.
     *
     * <p> Otherwise, this method copies {@code length} bytes from the
     * given array into this buffer, starting at the given offset in the array
     * and at the current position of this buffer.  The position of this buffer
     * is then incremented by {@code length}.
     *
     * <p> In other words, an invocation of this method of the form
     * <code>dst.put(src,&nbsp;off,&nbsp;len)</code> has exactly the same effect as
     * the loop
     *
     * <pre>{@code
     *     for (int i = off; i < off + len; i++)
     *         dst.put(src[i]);
     * }</pre>
     *
     * except that it first checks that there is sufficient space in this
     * buffer and it is potentially much more efficient.
     *
     * @param  src
     *         The array from which bytes are to be read
     *
     * @param  offset
     *         The offset within the array of the first byte to be read;
     *         must be non-negative and no larger than {@code src.length}
     *
     * @param  length
     *         The number of bytes to be read from the given array;
     *         must be non-negative and no larger than
     *         {@code src.length - offset}
     *
     * @return  This buffer
     *
     * @throws  BufferOverflowException
     *          If there is insufficient space in this buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If the preconditions on the {@code offset} and {@code length}
     *          parameters do not hold
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public ByteBuffer put(byte[] src, int offset, int length) {
        Objects.checkFromIndexSize(offset, length, src.length);
        if (length > remaining())
            throw new BufferOverflowException();
        int end = offset + length;
        for (int i = offset; i < end; i++)
            this.put(src[i]);
        return this;
    }

    Relative bulk put method  (optional operation).
 This method transfers the entire content of the given source byte array into this buffer. An invocation of this method of the form dst.put(a) behaves in exactly the same way as the invocation 
    dst.put(a, 0, a.length) 
Params: src – 
         The source array
Throws: BufferOverflowException – 
         If there is insufficient space in this buffer
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Relative bulk <i>put</i> method&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> This method transfers the entire content of the given source
     * byte array into this buffer.  An invocation of this method of the
     * form {@code dst.put(a)} behaves in exactly the same way as the
     * invocation
     *
     * <pre>
     *     dst.put(a, 0, a.length) </pre>
     *
     * @param   src
     *          The source array
     *
     * @return  This buffer
     *
     * @throws  BufferOverflowException
     *          If there is insufficient space in this buffer
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public final ByteBuffer put(byte[] src) {
        return put(src, 0, src.length);
    }

    Absolute bulk put method  (optional operation).
 This method transfers length bytes from the given array, starting at the given offset in the array and at the given index in this buffer. The position of this buffer is unchanged. 
 An invocation of this method of the form
dst.put(index, src, offset, length)
has exactly the same effect as the following loop except that it first
checks the consistency of the supplied parameters and it is potentially
much more efficient:

    for (int i = offset, j = index; i < offset + length; i++, j++)
        dst.put(j, src[i]);

Params: index –  The index in this buffer at which the first byte will be written; must be non-negative and less than limit()
src – 
        The array from which bytes are to be read
offset –  The offset within the array of the first byte to be read; must be non-negative and less than src.length
length –  The number of bytes to be read from the given array; must be non-negative and no larger than the smaller of limit() - index and src.length - offset
Throws: IndexOutOfBoundsException –  If the preconditions on the index, offset, and length parameters do not hold
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer
Since: 13/**
     * Absolute bulk <i>put</i> method&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> This method transfers {@code length} bytes from the given
     * array, starting at the given offset in the array and at the given index
     * in this buffer.  The position of this buffer is unchanged.
     *
     * <p> An invocation of this method of the form
     * <code>dst.put(index,&nbsp;src,&nbsp;offset,&nbsp;length)</code>
     * has exactly the same effect as the following loop except that it first
     * checks the consistency of the supplied parameters and it is potentially
     * much more efficient:
     *
     * <pre>{@code
     *     for (int i = offset, j = index; i < offset + length; i++, j++)
     *         dst.put(j, src[i]);
     * }</pre>
     *
     * @param  index
     *         The index in this buffer at which the first byte will be
     *         written; must be non-negative and less than {@code limit()}
     *
     * @param  src
     *         The array from which bytes are to be read
     *
     * @param  offset
     *         The offset within the array of the first byte to be read;
     *         must be non-negative and less than {@code src.length}
     *
     * @param  length
     *         The number of bytes to be read from the given array;
     *         must be non-negative and no larger than the smaller of
     *         {@code limit() - index} and {@code src.length - offset}
     *
     * @return  This buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If the preconditions on the {@code index}, {@code offset}, and
     *          {@code length} parameters do not hold
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     *
     * @since 13
     */
    public ByteBuffer put(int index, byte[] src, int offset, int length) {
        if (isReadOnly())
            throw new ReadOnlyBufferException();
        Objects.checkFromIndexSize(index, length, limit());
        Objects.checkFromIndexSize(offset, length, src.length);
        int end = offset + length;
        for (int i = offset, j = index; i < end; i++, j++)
            this.put(j, src[i]);
        return this;
    }

    Absolute bulk put method  (optional operation).
 This method copies bytes into this buffer from the given source
array.  The position of this buffer is unchanged.  An invocation of this
method of the form dst.put(index, src)
behaves in exactly the same way as the invocation:
    dst.put(index, src, 0, src.length); 
Params: index –  The index in this buffer at which the first byte will be written; must be non-negative and less than limit()
src – 
        The array from which bytes are to be read
Throws: IndexOutOfBoundsException –  If index is negative, not smaller than limit(), or limit() - index < src.length
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer
Since: 13/**
     * Absolute bulk <i>put</i> method&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> This method copies bytes into this buffer from the given source
     * array.  The position of this buffer is unchanged.  An invocation of this
     * method of the form <code>dst.put(index,&nbsp;src)</code>
     * behaves in exactly the same way as the invocation:
     *
     * <pre>
     *     dst.put(index, src, 0, src.length); </pre>
     *
     * @param  index
     *         The index in this buffer at which the first byte will be
     *         written; must be non-negative and less than {@code limit()}
     *
     * @param  src
     *         The array from which bytes are to be read
     *
     * @return  This buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative, not smaller than {@code limit()},
     *          or {@code limit() - index < src.length}
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     *
     * @since 13
     */
    public ByteBuffer put(int index, byte[] src) {
        return put(index, src, 0, src.length);
    }































































































    // -- Other stuff --

    Tells whether or not this buffer is backed by an accessible byte
array.
 If this method returns true then the array and arrayOffset methods may safely be invoked. 
Returns:  true if, and only if, this buffer is backed by an array and is not read-only/**
     * Tells whether or not this buffer is backed by an accessible byte
     * array.
     *
     * <p> If this method returns {@code true} then the {@link #array() array}
     * and {@link #arrayOffset() arrayOffset} methods may safely be invoked.
     * </p>
     *
     * @return  {@code true} if, and only if, this buffer
     *          is backed by an array and is not read-only
     */
    public final boolean hasArray() {
        return (hb != null) && !isReadOnly;
    }

    Returns the byte array that backs this
buffer  (optional operation).
 Modifications to this buffer's content will cause the returned
array's content to be modified, and vice versa.
 Invoke the hasArray method before invoking this method in order to ensure that this buffer has an accessible backing array. 
Throws: ReadOnlyBufferException – 
         If this buffer is backed by an array but is read-only
UnsupportedOperationException – 
         If this buffer is not backed by an accessible array
Returns:  The array that backs this buffer/**
     * Returns the byte array that backs this
     * buffer&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Modifications to this buffer's content will cause the returned
     * array's content to be modified, and vice versa.
     *
     * <p> Invoke the {@link #hasArray hasArray} method before invoking this
     * method in order to ensure that this buffer has an accessible backing
     * array.  </p>
     *
     * @return  The array that backs this buffer
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is backed by an array but is read-only
     *
     * @throws  UnsupportedOperationException
     *          If this buffer is not backed by an accessible array
     */
    public final byte[] array() {
        if (hb == null)
            throw new UnsupportedOperationException();
        if (isReadOnly)
            throw new ReadOnlyBufferException();
        return hb;
    }

    Returns the offset within this buffer's backing array of the first
element of the buffer  (optional operation).
 If this buffer is backed by an array then buffer position p
corresponds to array index p + arrayOffset(). 
 Invoke the hasArray method before invoking this method in order to ensure that this buffer has an accessible backing array. 
Throws: ReadOnlyBufferException – 
         If this buffer is backed by an array but is read-only
UnsupportedOperationException – 
         If this buffer is not backed by an accessible array
Returns:  The offset within this buffer's array
         of the first element of the buffer/**
     * Returns the offset within this buffer's backing array of the first
     * element of the buffer&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> If this buffer is backed by an array then buffer position <i>p</i>
     * corresponds to array index <i>p</i>&nbsp;+&nbsp;{@code arrayOffset()}.
     *
     * <p> Invoke the {@link #hasArray hasArray} method before invoking this
     * method in order to ensure that this buffer has an accessible backing
     * array.  </p>
     *
     * @return  The offset within this buffer's array
     *          of the first element of the buffer
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is backed by an array but is read-only
     *
     * @throws  UnsupportedOperationException
     *          If this buffer is not backed by an accessible array
     */
    public final int arrayOffset() {
        if (hb == null)
            throw new UnsupportedOperationException();
        if (isReadOnly)
            throw new ReadOnlyBufferException();
        return offset;
    }

    // -- Covariant return type overrides

    {@inheritDoc}
/**
     * {@inheritDoc}
     */
    @Override
    public



    ByteBuffer position(int newPosition) {
        super.position(newPosition);
        return this;
    }
    
    {@inheritDoc}
/**
     * {@inheritDoc}
     */
    @Override
    public



    ByteBuffer limit(int newLimit) {
        super.limit(newLimit);
        return this;
    }
    
    {@inheritDoc}
/**
     * {@inheritDoc}
     */
    @Override
    public 



    ByteBuffer mark() {
        super.mark();
        return this;
    }

    {@inheritDoc}
/**
     * {@inheritDoc}
     */
    @Override
    public 



    ByteBuffer reset() {
        super.reset();
        return this;
    }

    {@inheritDoc}
/**
     * {@inheritDoc}
     */
    @Override
    public 



    ByteBuffer clear() {
        super.clear();
        return this;
    }

    {@inheritDoc}
/**
     * {@inheritDoc}
     */
    @Override
    public 



    ByteBuffer flip() {
        super.flip();
        return this;
    }

    {@inheritDoc}
/**
     * {@inheritDoc}
     */
    @Override
    public 



    ByteBuffer rewind() {
        super.rewind();
        return this;
    }

    Compacts this buffer  (optional operation).
 The bytes between the buffer's current position and its limit,
if any, are copied to the beginning of the buffer.  That is, the
byte at index p = position() is copied to index zero, the byte at index p + 1 is copied to index one, and so forth until the byte at index limit() - 1 is copied to index n = limit() - 1 - p.
The buffer's position is then set to n+1 and its limit is set to
its capacity.  The mark, if defined, is discarded.
 The buffer's position is set to the number of bytes copied,
rather than to zero, so that an invocation of this method can be
followed immediately by an invocation of another relative put
method. 
 Invoke this method after writing data from a buffer in case the write was incomplete. The following loop, for example, copies bytes from one channel to another via the buffer buf: 

  buf.clear();          // Prepare buffer for use
  while (in.read(buf) >= 0 || buf.position != 0) {
      buf.flip();
      out.write(buf);
      buf.compact();    // In case of partial write
  }

Throws: ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Compacts this buffer&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> The bytes between the buffer's current position and its limit,
     * if any, are copied to the beginning of the buffer.  That is, the
     * byte at index <i>p</i>&nbsp;=&nbsp;{@code position()} is copied
     * to index zero, the byte at index <i>p</i>&nbsp;+&nbsp;1 is copied
     * to index one, and so forth until the byte at index
     * {@code limit()}&nbsp;-&nbsp;1 is copied to index
     * <i>n</i>&nbsp;=&nbsp;{@code limit()}&nbsp;-&nbsp;{@code 1}&nbsp;-&nbsp;<i>p</i>.
     * The buffer's position is then set to <i>n+1</i> and its limit is set to
     * its capacity.  The mark, if defined, is discarded.
     *
     * <p> The buffer's position is set to the number of bytes copied,
     * rather than to zero, so that an invocation of this method can be
     * followed immediately by an invocation of another relative <i>put</i>
     * method. </p>
     *

     *
     * <p> Invoke this method after writing data from a buffer in case the
     * write was incomplete.  The following loop, for example, copies bytes
     * from one channel to another via the buffer {@code buf}:
     *
     * <blockquote><pre>{@code
     *   buf.clear();          // Prepare buffer for use
     *   while (in.read(buf) >= 0 || buf.position != 0) {
     *       buf.flip();
     *       out.write(buf);
     *       buf.compact();    // In case of partial write
     *   }
     * }</pre></blockquote>
     *

     *
     * @return  This buffer
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer compact();

    Tells whether or not this byte buffer is direct.
Returns:  true if, and only if, this buffer is direct/**
     * Tells whether or not this byte buffer is direct.
     *
     * @return  {@code true} if, and only if, this buffer is direct
     */
    public abstract boolean isDirect();



    Returns a string summarizing the state of this buffer.
Returns:  A summary string/**
     * Returns a string summarizing the state of this buffer.
     *
     * @return  A summary string
     */
    public String toString() {
        StringBuffer sb = new StringBuffer();
        sb.append(getClass().getName());
        sb.append("[pos=");
        sb.append(position());
        sb.append(" lim=");
        sb.append(limit());
        sb.append(" cap=");
        sb.append(capacity());
        sb.append("]");
        return sb.toString();
    }






    Returns the current hash code of this buffer.
 The hash code of a byte buffer depends only upon its remaining elements; that is, upon the elements from position() up to, and including, the element at limit() - 1. 
 Because buffer hash codes are content-dependent, it is inadvisable
to use buffers as keys in hash maps or similar data structures unless it
is known that their contents will not change.  
Returns:  The current hash code of this buffer/**
     * Returns the current hash code of this buffer.
     *
     * <p> The hash code of a byte buffer depends only upon its remaining
     * elements; that is, upon the elements from {@code position()} up to, and
     * including, the element at {@code limit()}&nbsp;-&nbsp;{@code 1}.
     *
     * <p> Because buffer hash codes are content-dependent, it is inadvisable
     * to use buffers as keys in hash maps or similar data structures unless it
     * is known that their contents will not change.  </p>
     *
     * @return  The current hash code of this buffer
     */
    public int hashCode() {
        int h = 1;
        int p = position();
        for (int i = limit() - 1; i >= p; i--)



            h = 31 * h + (int)get(i);

        return h;
    }

    Tells whether or not this buffer is equal to another object.
 Two byte buffers are equal if, and only if,

   They have the same element type,  
   They have the same number of remaining elements, and
  
   The two sequences of remaining elements, considered
  independently of their starting positions, are pointwise equal.
  

 A byte buffer is not equal to any other type of object.  
Params: ob –  The object to which this buffer is to be compared
Returns:  true if, and only if, this buffer is equal to the given object/**
     * Tells whether or not this buffer is equal to another object.
     *
     * <p> Two byte buffers are equal if, and only if,
     *
     * <ol>
     *
     *   <li><p> They have the same element type,  </p></li>
     *
     *   <li><p> They have the same number of remaining elements, and
     *   </p></li>
     *
     *   <li><p> The two sequences of remaining elements, considered
     *   independently of their starting positions, are pointwise equal.







     *   </p></li>
     *
     * </ol>
     *
     * <p> A byte buffer is not equal to any other type of object.  </p>
     *
     * @param  ob  The object to which this buffer is to be compared
     *
     * @return  {@code true} if, and only if, this buffer is equal to the
     *           given object
     */
    public boolean equals(Object ob) {
        if (this == ob)
            return true;
        if (!(ob instanceof ByteBuffer))
            return false;
        ByteBuffer that = (ByteBuffer)ob;
        if (this.remaining() != that.remaining())
            return false;
        return BufferMismatch.mismatch(this, this.position(),
                                       that, that.position(),
                                       this.remaining()) < 0;
    }

    Compares this buffer to another.
 Two byte buffers are compared by comparing their sequences of remaining elements lexicographically, without regard to the starting position of each sequence within its corresponding buffer. Pairs of byte elements are compared as if by invoking Byte.compare(byte, byte). 
 A byte buffer is not comparable to any other type of object.
Returns:  A negative integer, zero, or a positive integer as this buffer
         is less than, equal to, or greater than the given buffer/**
     * Compares this buffer to another.
     *
     * <p> Two byte buffers are compared by comparing their sequences of
     * remaining elements lexicographically, without regard to the starting
     * position of each sequence within its corresponding buffer.








     * Pairs of {@code byte} elements are compared as if by invoking
     * {@link Byte#compare(byte,byte)}.

     *
     * <p> A byte buffer is not comparable to any other type of object.
     *
     * @return  A negative integer, zero, or a positive integer as this buffer
     *          is less than, equal to, or greater than the given buffer
     */
    public int compareTo(ByteBuffer that) {
        int i = BufferMismatch.mismatch(this, this.position(),
                                        that, that.position(),
                                        Math.min(this.remaining(), that.remaining()));
        if (i >= 0) {
            return compare(this.get(this.position() + i), that.get(that.position() + i));
        }
        return this.remaining() - that.remaining();
    }

    private static int compare(byte x, byte y) {






        return Byte.compare(x, y);

    }

    Finds and returns the relative index of the first mismatch between this buffer and a given buffer. The index is relative to the position of each buffer and will be in the range of 0 (inclusive) up to the smaller of the remaining elements in each buffer (exclusive).  If the two buffers share a common prefix then the returned index is
the length of the common prefix and it follows that there is a mismatch
between the two buffers at that index within the respective buffers.
If one buffer is a proper prefix of the other then the returned index is
the smaller of the remaining elements in each buffer, and it follows that
the index is only valid for the buffer with the larger number of
remaining elements.
Otherwise, there is no mismatch.
Params: that – 
        The byte buffer to be tested for a mismatch with this buffer
Returns:  The relative index of the first mismatch between this and the
         given buffer, otherwise -1 if no mismatch.
Since: 11/**
     * Finds and returns the relative index of the first mismatch between this
     * buffer and a given buffer.  The index is relative to the
     * {@link #position() position} of each buffer and will be in the range of
     * 0 (inclusive) up to the smaller of the {@link #remaining() remaining}
     * elements in each buffer (exclusive).
     *
     * <p> If the two buffers share a common prefix then the returned index is
     * the length of the common prefix and it follows that there is a mismatch
     * between the two buffers at that index within the respective buffers.
     * If one buffer is a proper prefix of the other then the returned index is
     * the smaller of the remaining elements in each buffer, and it follows that
     * the index is only valid for the buffer with the larger number of
     * remaining elements.
     * Otherwise, there is no mismatch.
     *
     * @param  that
     *         The byte buffer to be tested for a mismatch with this buffer
     *
     * @return  The relative index of the first mismatch between this and the
     *          given buffer, otherwise -1 if no mismatch.
     *
     * @since 11
     */
    public int mismatch(ByteBuffer that) {
        int length = Math.min(this.remaining(), that.remaining());
        int r = BufferMismatch.mismatch(this, this.position(),
                                        that, that.position(),
                                        length);
        return (r == -1 && this.remaining() != that.remaining()) ? length : r;
    }

    // -- Other char stuff --


































































































































































































    // -- Other byte stuff: Access to binary data --



























    boolean bigEndian                                   // package-private
        = true;
    boolean nativeByteOrder                             // package-private
        = (ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN);

    Retrieves this buffer's byte order.
 The byte order is used when reading or writing multibyte values, and when creating buffers that are views of this byte buffer. The order of a newly-created byte buffer is always 
BIG_ENDIAN. 
Returns:  This buffer's byte order/**
     * Retrieves this buffer's byte order.
     *
     * <p> The byte order is used when reading or writing multibyte values, and
     * when creating buffers that are views of this byte buffer.  The order of
     * a newly-created byte buffer is always {@link ByteOrder#BIG_ENDIAN
     * BIG_ENDIAN}.  </p>
     *
     * @return  This buffer's byte order
     */
    public final ByteOrder order() {
        return bigEndian ? ByteOrder.BIG_ENDIAN : ByteOrder.LITTLE_ENDIAN;
    }

    Modifies this buffer's byte order.
Params: bo –  The new byte order, either BIG_ENDIAN or LITTLE_ENDIAN
Returns:  This buffer/**
     * Modifies this buffer's byte order.
     *
     * @param  bo
     *         The new byte order,
     *         either {@link ByteOrder#BIG_ENDIAN BIG_ENDIAN}
     *         or {@link ByteOrder#LITTLE_ENDIAN LITTLE_ENDIAN}
     *
     * @return  This buffer
     */
    public final ByteBuffer order(ByteOrder bo) {
        bigEndian = (bo == ByteOrder.BIG_ENDIAN);
        nativeByteOrder =
            (bigEndian == (ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN));
        return this;
    }

    Returns the memory address, pointing to the byte at the given index,
modulus the given unit size.
 A return value greater than zero indicates the address of the byte at the index is misaligned for the unit size, and the value's quantity indicates how much the index should be rounded up or down to locate a byte at an aligned address. Otherwise, a value of 0 indicates that the address of the byte at the index is aligned for the unit size. 
Params: index – 
        The index to query for alignment offset, must be non-negative, no
        upper bounds check is performed
unitSize –  The unit size in bytes, must be a power of 2
Throws: IllegalArgumentException –  If the index is negative or the unit size is not a power of 2
UnsupportedOperationException – 
        If the native platform does not guarantee stable alignment offset
        values for the given unit size when managing the memory regions
        of buffers of the same kind as this buffer (direct or
        non-direct).  For example, if garbage collection would result
        in the moving of a memory region covered by a non-direct buffer
        from one location to another and both locations have different
        alignment characteristics.
See Also: alignedSlice(int)
API Note: 
This method may be utilized to determine if unit size bytes from an
index can be accessed atomically, if supported by the native platform.
Implementation Note:  This implementation throws UnsupportedOperationException for non-direct buffers when the given unit size is greater then 8.
Returns:  The indexed byte's memory address modulus the unit size
Since: 9/**
     * Returns the memory address, pointing to the byte at the given index,
     * modulus the given unit size.
     *
     * <p> A return value greater than zero indicates the address of the byte at
     * the index is misaligned for the unit size, and the value's quantity
     * indicates how much the index should be rounded up or down to locate a
     * byte at an aligned address.  Otherwise, a value of {@code 0} indicates
     * that the address of the byte at the index is aligned for the unit size.
     *
     * @apiNote
     * This method may be utilized to determine if unit size bytes from an
     * index can be accessed atomically, if supported by the native platform.
     *
     * @implNote
     * This implementation throws {@code UnsupportedOperationException} for
     * non-direct buffers when the given unit size is greater then {@code 8}.
     *
     * @param  index
     *         The index to query for alignment offset, must be non-negative, no
     *         upper bounds check is performed
     *
     * @param  unitSize
     *         The unit size in bytes, must be a power of {@code 2}
     *
     * @return  The indexed byte's memory address modulus the unit size
     *
     * @throws IllegalArgumentException
     *         If the index is negative or the unit size is not a power of
     *         {@code 2}
     *
     * @throws UnsupportedOperationException
     *         If the native platform does not guarantee stable alignment offset
     *         values for the given unit size when managing the memory regions
     *         of buffers of the same kind as this buffer (direct or
     *         non-direct).  For example, if garbage collection would result
     *         in the moving of a memory region covered by a non-direct buffer
     *         from one location to another and both locations have different
     *         alignment characteristics.
     *
     * @see #alignedSlice(int)
     * @since 9
     */
    public final int alignmentOffset(int index, int unitSize) {
        if (index < 0)
            throw new IllegalArgumentException("Index less than zero: " + index);
        if (unitSize < 1 || (unitSize & (unitSize - 1)) != 0)
            throw new IllegalArgumentException("Unit size not a power of two: " + unitSize);
        if (unitSize > 8 && !isDirect())
            throw new UnsupportedOperationException("Unit size unsupported for non-direct buffers: " + unitSize);

        return (int) ((address + index) % unitSize);
    }

    Creates a new byte buffer whose content is a shared and aligned
subsequence of this buffer's content.
 The content of the new buffer will start at this buffer's current position rounded up to the index of the nearest aligned byte for the given unit size, and end at this buffer's limit rounded down to the index of the nearest aligned byte for the given unit size. If rounding results in out-of-bound values then the new buffer's capacity and limit will be zero. If rounding is within bounds the following expressions will be true for a new buffer nb and unit size unitSize: 

nb.alignmentOffset(0, unitSize) == 0
nb.alignmentOffset(nb.limit(), unitSize) == 0

 Changes to this buffer's content will be visible in the new
buffer, and vice versa; the two buffers' position, limit, and mark
values will be independent.
 The new buffer's position will be zero, its capacity and its limit will be the number of bytes remaining in this buffer or fewer subject to alignment, its mark will be undefined, and its byte order will be BIG_ENDIAN. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only. 
Params: unitSize –  The unit size in bytes, must be a power of 2
Throws: IllegalArgumentException –  If the unit size not a power of 2
UnsupportedOperationException – 
        If the native platform does not guarantee stable aligned slices
        for the given unit size when managing the memory regions
        of buffers of the same kind as this buffer (direct or
        non-direct).  For example, if garbage collection would result
        in the moving of a memory region covered by a non-direct buffer
        from one location to another and both locations have different
        alignment characteristics.
See Also: alignmentOffset(int, int)
slice()
API Note: 
This method may be utilized to create a new buffer where unit size bytes
from index, that is a multiple of the unit size, may be accessed
atomically, if supported by the native platform.
Implementation Note:  This implementation throws UnsupportedOperationException for non-direct buffers when the given unit size is greater then 8.
Returns:  The new byte buffer
Since: 9/**
     * Creates a new byte buffer whose content is a shared and aligned
     * subsequence of this buffer's content.
     *
     * <p> The content of the new buffer will start at this buffer's current
     * position rounded up to the index of the nearest aligned byte for the
     * given unit size, and end at this buffer's limit rounded down to the index
     * of the nearest aligned byte for the given unit size.
     * If rounding results in out-of-bound values then the new buffer's capacity
     * and limit will be zero.  If rounding is within bounds the following
     * expressions will be true for a new buffer {@code nb} and unit size
     * {@code unitSize}:
     * <pre>{@code
     * nb.alignmentOffset(0, unitSize) == 0
     * nb.alignmentOffset(nb.limit(), unitSize) == 0
     * }</pre>
     *
     * <p> Changes to this buffer's content will be visible in the new
     * buffer, and vice versa; the two buffers' position, limit, and mark
     * values will be independent.
     *
     * <p> The new buffer's position will be zero, its capacity and its limit
     * will be the number of bytes remaining in this buffer or fewer subject to
     * alignment, its mark will be undefined, and its byte order will be
     * {@link ByteOrder#BIG_ENDIAN BIG_ENDIAN}.
     *
     * The new buffer will be direct if, and only if, this buffer is direct, and
     * it will be read-only if, and only if, this buffer is read-only.  </p>
     *
     * @apiNote
     * This method may be utilized to create a new buffer where unit size bytes
     * from index, that is a multiple of the unit size, may be accessed
     * atomically, if supported by the native platform.
     *
     * @implNote
     * This implementation throws {@code UnsupportedOperationException} for
     * non-direct buffers when the given unit size is greater then {@code 8}.
     *
     * @param  unitSize
     *         The unit size in bytes, must be a power of {@code 2}
     *
     * @return  The new byte buffer
     *
     * @throws IllegalArgumentException
     *         If the unit size not a power of {@code 2}
     *
     * @throws UnsupportedOperationException
     *         If the native platform does not guarantee stable aligned slices
     *         for the given unit size when managing the memory regions
     *         of buffers of the same kind as this buffer (direct or
     *         non-direct).  For example, if garbage collection would result
     *         in the moving of a memory region covered by a non-direct buffer
     *         from one location to another and both locations have different
     *         alignment characteristics.
     *
     * @see #alignmentOffset(int, int)
     * @see #slice()
     * @since 9
     */
    public final ByteBuffer alignedSlice(int unitSize) {
        int pos = position();
        int lim = limit();

        int pos_mod = alignmentOffset(pos, unitSize);
        int lim_mod = alignmentOffset(lim, unitSize);

        // Round up the position to align with unit size
        int aligned_pos = (pos_mod > 0)
            ? pos + (unitSize - pos_mod)
            : pos;

        // Round down the limit to align with unit size
        int aligned_lim = lim - lim_mod;

        if (aligned_pos > lim || aligned_lim < pos) {
            aligned_pos = aligned_lim = pos;
        }

        return slice(aligned_pos, aligned_lim - aligned_pos);
    }


    Relative get method for reading a char value.
 Reads the next two bytes at this buffer's current position,
composing them into a char value according to the current byte order,
and then increments the position by two.  
Throws: BufferUnderflowException – 
         If there are fewer than two bytes
         remaining in this buffer
Returns:  The char value at the buffer's current position/**
     * Relative <i>get</i> method for reading a char value.
     *
     * <p> Reads the next two bytes at this buffer's current position,
     * composing them into a char value according to the current byte order,
     * and then increments the position by two.  </p>
     *
     * @return  The char value at the buffer's current position
     *
     * @throws  BufferUnderflowException
     *          If there are fewer than two bytes
     *          remaining in this buffer
     */
    public abstract char getChar();

    Relative put method for writing a char
value  (optional operation).
 Writes two bytes containing the given char value, in the
current byte order, into this buffer at the current position, and then
increments the position by two.  
Params: value – 
        The char value to be written
Throws: BufferOverflowException – 
         If there are fewer than two bytes
         remaining in this buffer
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Relative <i>put</i> method for writing a char
     * value&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes two bytes containing the given char value, in the
     * current byte order, into this buffer at the current position, and then
     * increments the position by two.  </p>
     *
     * @param  value
     *         The char value to be written
     *
     * @return  This buffer
     *
     * @throws  BufferOverflowException
     *          If there are fewer than two bytes
     *          remaining in this buffer
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer putChar(char value);

    Absolute get method for reading a char value.
 Reads two bytes at the given index, composing them into a
char value according to the current byte order.  
Params: index – 
        The index from which the bytes will be read
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit, minus one
Returns:  The char value at the given index/**
     * Absolute <i>get</i> method for reading a char value.
     *
     * <p> Reads two bytes at the given index, composing them into a
     * char value according to the current byte order.  </p>
     *
     * @param  index
     *         The index from which the bytes will be read
     *
     * @return  The char value at the given index
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit,
     *          minus one
     */
    public abstract char getChar(int index);

    Absolute put method for writing a char
value  (optional operation).
 Writes two bytes containing the given char value, in the
current byte order, into this buffer at the given index.  
Params: index – 
        The index at which the bytes will be written
value – 
        The char value to be written
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit, minus one
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Absolute <i>put</i> method for writing a char
     * value&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes two bytes containing the given char value, in the
     * current byte order, into this buffer at the given index.  </p>
     *
     * @param  index
     *         The index at which the bytes will be written
     *
     * @param  value
     *         The char value to be written
     *
     * @return  This buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit,
     *          minus one
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer putChar(int index, char value);

    Creates a view of this byte buffer as a char buffer.
 The content of the new buffer will start at this buffer's current
position.  Changes to this buffer's content will be visible in the new
buffer, and vice versa; the two buffers' position, limit, and mark
values will be independent.
 The new buffer's position will be zero, its capacity and its limit
will be the number of bytes remaining in this buffer divided by
two, its mark will be undefined, and its byte order will be that
of the byte buffer at the moment the view is created.  The new buffer
will be direct if, and only if, this buffer is direct, and it will be
read-only if, and only if, this buffer is read-only.  
Returns:  A new char buffer/**
     * Creates a view of this byte buffer as a char buffer.
     *
     * <p> The content of the new buffer will start at this buffer's current
     * position.  Changes to this buffer's content will be visible in the new
     * buffer, and vice versa; the two buffers' position, limit, and mark
     * values will be independent.
     *
     * <p> The new buffer's position will be zero, its capacity and its limit
     * will be the number of bytes remaining in this buffer divided by
     * two, its mark will be undefined, and its byte order will be that
     * of the byte buffer at the moment the view is created.  The new buffer
     * will be direct if, and only if, this buffer is direct, and it will be
     * read-only if, and only if, this buffer is read-only.  </p>
     *
     * @return  A new char buffer
     */
    public abstract CharBuffer asCharBuffer();


    Relative get method for reading a short value.
 Reads the next two bytes at this buffer's current position,
composing them into a short value according to the current byte order,
and then increments the position by two.  
Throws: BufferUnderflowException – 
         If there are fewer than two bytes
         remaining in this buffer
Returns:  The short value at the buffer's current position/**
     * Relative <i>get</i> method for reading a short value.
     *
     * <p> Reads the next two bytes at this buffer's current position,
     * composing them into a short value according to the current byte order,
     * and then increments the position by two.  </p>
     *
     * @return  The short value at the buffer's current position
     *
     * @throws  BufferUnderflowException
     *          If there are fewer than two bytes
     *          remaining in this buffer
     */
    public abstract short getShort();

    Relative put method for writing a short
value  (optional operation).
 Writes two bytes containing the given short value, in the
current byte order, into this buffer at the current position, and then
increments the position by two.  
Params: value – 
        The short value to be written
Throws: BufferOverflowException – 
         If there are fewer than two bytes
         remaining in this buffer
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Relative <i>put</i> method for writing a short
     * value&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes two bytes containing the given short value, in the
     * current byte order, into this buffer at the current position, and then
     * increments the position by two.  </p>
     *
     * @param  value
     *         The short value to be written
     *
     * @return  This buffer
     *
     * @throws  BufferOverflowException
     *          If there are fewer than two bytes
     *          remaining in this buffer
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer putShort(short value);

    Absolute get method for reading a short value.
 Reads two bytes at the given index, composing them into a
short value according to the current byte order.  
Params: index – 
        The index from which the bytes will be read
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit, minus one
Returns:  The short value at the given index/**
     * Absolute <i>get</i> method for reading a short value.
     *
     * <p> Reads two bytes at the given index, composing them into a
     * short value according to the current byte order.  </p>
     *
     * @param  index
     *         The index from which the bytes will be read
     *
     * @return  The short value at the given index
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit,
     *          minus one
     */
    public abstract short getShort(int index);

    Absolute put method for writing a short
value  (optional operation).
 Writes two bytes containing the given short value, in the
current byte order, into this buffer at the given index.  
Params: index – 
        The index at which the bytes will be written
value – 
        The short value to be written
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit, minus one
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Absolute <i>put</i> method for writing a short
     * value&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes two bytes containing the given short value, in the
     * current byte order, into this buffer at the given index.  </p>
     *
     * @param  index
     *         The index at which the bytes will be written
     *
     * @param  value
     *         The short value to be written
     *
     * @return  This buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit,
     *          minus one
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer putShort(int index, short value);

    Creates a view of this byte buffer as a short buffer.
 The content of the new buffer will start at this buffer's current
position.  Changes to this buffer's content will be visible in the new
buffer, and vice versa; the two buffers' position, limit, and mark
values will be independent.
 The new buffer's position will be zero, its capacity and its limit
will be the number of bytes remaining in this buffer divided by
two, its mark will be undefined, and its byte order will be that
of the byte buffer at the moment the view is created.  The new buffer
will be direct if, and only if, this buffer is direct, and it will be
read-only if, and only if, this buffer is read-only.  
Returns:  A new short buffer/**
     * Creates a view of this byte buffer as a short buffer.
     *
     * <p> The content of the new buffer will start at this buffer's current
     * position.  Changes to this buffer's content will be visible in the new
     * buffer, and vice versa; the two buffers' position, limit, and mark
     * values will be independent.
     *
     * <p> The new buffer's position will be zero, its capacity and its limit
     * will be the number of bytes remaining in this buffer divided by
     * two, its mark will be undefined, and its byte order will be that
     * of the byte buffer at the moment the view is created.  The new buffer
     * will be direct if, and only if, this buffer is direct, and it will be
     * read-only if, and only if, this buffer is read-only.  </p>
     *
     * @return  A new short buffer
     */
    public abstract ShortBuffer asShortBuffer();


    Relative get method for reading an int value.
 Reads the next four bytes at this buffer's current position,
composing them into an int value according to the current byte order,
and then increments the position by four.  
Throws: BufferUnderflowException – 
         If there are fewer than four bytes
         remaining in this buffer
Returns:  The int value at the buffer's current position/**
     * Relative <i>get</i> method for reading an int value.
     *
     * <p> Reads the next four bytes at this buffer's current position,
     * composing them into an int value according to the current byte order,
     * and then increments the position by four.  </p>
     *
     * @return  The int value at the buffer's current position
     *
     * @throws  BufferUnderflowException
     *          If there are fewer than four bytes
     *          remaining in this buffer
     */
    public abstract int getInt();

    Relative put method for writing an int
value  (optional operation).
 Writes four bytes containing the given int value, in the
current byte order, into this buffer at the current position, and then
increments the position by four.  
Params: value – 
        The int value to be written
Throws: BufferOverflowException – 
         If there are fewer than four bytes
         remaining in this buffer
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Relative <i>put</i> method for writing an int
     * value&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes four bytes containing the given int value, in the
     * current byte order, into this buffer at the current position, and then
     * increments the position by four.  </p>
     *
     * @param  value
     *         The int value to be written
     *
     * @return  This buffer
     *
     * @throws  BufferOverflowException
     *          If there are fewer than four bytes
     *          remaining in this buffer
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer putInt(int value);

    Absolute get method for reading an int value.
 Reads four bytes at the given index, composing them into a
int value according to the current byte order.  
Params: index – 
        The index from which the bytes will be read
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit, minus three
Returns:  The int value at the given index/**
     * Absolute <i>get</i> method for reading an int value.
     *
     * <p> Reads four bytes at the given index, composing them into a
     * int value according to the current byte order.  </p>
     *
     * @param  index
     *         The index from which the bytes will be read
     *
     * @return  The int value at the given index
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit,
     *          minus three
     */
    public abstract int getInt(int index);

    Absolute put method for writing an int
value  (optional operation).
 Writes four bytes containing the given int value, in the
current byte order, into this buffer at the given index.  
Params: index – 
        The index at which the bytes will be written
value – 
        The int value to be written
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit, minus three
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Absolute <i>put</i> method for writing an int
     * value&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes four bytes containing the given int value, in the
     * current byte order, into this buffer at the given index.  </p>
     *
     * @param  index
     *         The index at which the bytes will be written
     *
     * @param  value
     *         The int value to be written
     *
     * @return  This buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit,
     *          minus three
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer putInt(int index, int value);

    Creates a view of this byte buffer as an int buffer.
 The content of the new buffer will start at this buffer's current
position.  Changes to this buffer's content will be visible in the new
buffer, and vice versa; the two buffers' position, limit, and mark
values will be independent.
 The new buffer's position will be zero, its capacity and its limit
will be the number of bytes remaining in this buffer divided by
four, its mark will be undefined, and its byte order will be that
of the byte buffer at the moment the view is created.  The new buffer
will be direct if, and only if, this buffer is direct, and it will be
read-only if, and only if, this buffer is read-only.  
Returns:  A new int buffer/**
     * Creates a view of this byte buffer as an int buffer.
     *
     * <p> The content of the new buffer will start at this buffer's current
     * position.  Changes to this buffer's content will be visible in the new
     * buffer, and vice versa; the two buffers' position, limit, and mark
     * values will be independent.
     *
     * <p> The new buffer's position will be zero, its capacity and its limit
     * will be the number of bytes remaining in this buffer divided by
     * four, its mark will be undefined, and its byte order will be that
     * of the byte buffer at the moment the view is created.  The new buffer
     * will be direct if, and only if, this buffer is direct, and it will be
     * read-only if, and only if, this buffer is read-only.  </p>
     *
     * @return  A new int buffer
     */
    public abstract IntBuffer asIntBuffer();


    Relative get method for reading a long value.
 Reads the next eight bytes at this buffer's current position,
composing them into a long value according to the current byte order,
and then increments the position by eight.  
Throws: BufferUnderflowException – 
         If there are fewer than eight bytes
         remaining in this buffer
Returns:  The long value at the buffer's current position/**
     * Relative <i>get</i> method for reading a long value.
     *
     * <p> Reads the next eight bytes at this buffer's current position,
     * composing them into a long value according to the current byte order,
     * and then increments the position by eight.  </p>
     *
     * @return  The long value at the buffer's current position
     *
     * @throws  BufferUnderflowException
     *          If there are fewer than eight bytes
     *          remaining in this buffer
     */
    public abstract long getLong();

    Relative put method for writing a long
value  (optional operation).
 Writes eight bytes containing the given long value, in the
current byte order, into this buffer at the current position, and then
increments the position by eight.  
Params: value – 
        The long value to be written
Throws: BufferOverflowException – 
         If there are fewer than eight bytes
         remaining in this buffer
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Relative <i>put</i> method for writing a long
     * value&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes eight bytes containing the given long value, in the
     * current byte order, into this buffer at the current position, and then
     * increments the position by eight.  </p>
     *
     * @param  value
     *         The long value to be written
     *
     * @return  This buffer
     *
     * @throws  BufferOverflowException
     *          If there are fewer than eight bytes
     *          remaining in this buffer
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer putLong(long value);

    Absolute get method for reading a long value.
 Reads eight bytes at the given index, composing them into a
long value according to the current byte order.  
Params: index – 
        The index from which the bytes will be read
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit, minus seven
Returns:  The long value at the given index/**
     * Absolute <i>get</i> method for reading a long value.
     *
     * <p> Reads eight bytes at the given index, composing them into a
     * long value according to the current byte order.  </p>
     *
     * @param  index
     *         The index from which the bytes will be read
     *
     * @return  The long value at the given index
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit,
     *          minus seven
     */
    public abstract long getLong(int index);

    Absolute put method for writing a long
value  (optional operation).
 Writes eight bytes containing the given long value, in the
current byte order, into this buffer at the given index.  
Params: index – 
        The index at which the bytes will be written
value – 
        The long value to be written
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit, minus seven
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Absolute <i>put</i> method for writing a long
     * value&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes eight bytes containing the given long value, in the
     * current byte order, into this buffer at the given index.  </p>
     *
     * @param  index
     *         The index at which the bytes will be written
     *
     * @param  value
     *         The long value to be written
     *
     * @return  This buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit,
     *          minus seven
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer putLong(int index, long value);

    Creates a view of this byte buffer as a long buffer.
 The content of the new buffer will start at this buffer's current
position.  Changes to this buffer's content will be visible in the new
buffer, and vice versa; the two buffers' position, limit, and mark
values will be independent.
 The new buffer's position will be zero, its capacity and its limit
will be the number of bytes remaining in this buffer divided by
eight, its mark will be undefined, and its byte order will be that
of the byte buffer at the moment the view is created.  The new buffer
will be direct if, and only if, this buffer is direct, and it will be
read-only if, and only if, this buffer is read-only.  
Returns:  A new long buffer/**
     * Creates a view of this byte buffer as a long buffer.
     *
     * <p> The content of the new buffer will start at this buffer's current
     * position.  Changes to this buffer's content will be visible in the new
     * buffer, and vice versa; the two buffers' position, limit, and mark
     * values will be independent.
     *
     * <p> The new buffer's position will be zero, its capacity and its limit
     * will be the number of bytes remaining in this buffer divided by
     * eight, its mark will be undefined, and its byte order will be that
     * of the byte buffer at the moment the view is created.  The new buffer
     * will be direct if, and only if, this buffer is direct, and it will be
     * read-only if, and only if, this buffer is read-only.  </p>
     *
     * @return  A new long buffer
     */
    public abstract LongBuffer asLongBuffer();


    Relative get method for reading a float value.
 Reads the next four bytes at this buffer's current position,
composing them into a float value according to the current byte order,
and then increments the position by four.  
Throws: BufferUnderflowException – 
         If there are fewer than four bytes
         remaining in this buffer
Returns:  The float value at the buffer's current position/**
     * Relative <i>get</i> method for reading a float value.
     *
     * <p> Reads the next four bytes at this buffer's current position,
     * composing them into a float value according to the current byte order,
     * and then increments the position by four.  </p>
     *
     * @return  The float value at the buffer's current position
     *
     * @throws  BufferUnderflowException
     *          If there are fewer than four bytes
     *          remaining in this buffer
     */
    public abstract float getFloat();

    Relative put method for writing a float
value  (optional operation).
 Writes four bytes containing the given float value, in the
current byte order, into this buffer at the current position, and then
increments the position by four.  
Params: value – 
        The float value to be written
Throws: BufferOverflowException – 
         If there are fewer than four bytes
         remaining in this buffer
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Relative <i>put</i> method for writing a float
     * value&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes four bytes containing the given float value, in the
     * current byte order, into this buffer at the current position, and then
     * increments the position by four.  </p>
     *
     * @param  value
     *         The float value to be written
     *
     * @return  This buffer
     *
     * @throws  BufferOverflowException
     *          If there are fewer than four bytes
     *          remaining in this buffer
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer putFloat(float value);

    Absolute get method for reading a float value.
 Reads four bytes at the given index, composing them into a
float value according to the current byte order.  
Params: index – 
        The index from which the bytes will be read
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit, minus three
Returns:  The float value at the given index/**
     * Absolute <i>get</i> method for reading a float value.
     *
     * <p> Reads four bytes at the given index, composing them into a
     * float value according to the current byte order.  </p>
     *
     * @param  index
     *         The index from which the bytes will be read
     *
     * @return  The float value at the given index
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit,
     *          minus three
     */
    public abstract float getFloat(int index);

    Absolute put method for writing a float
value  (optional operation).
 Writes four bytes containing the given float value, in the
current byte order, into this buffer at the given index.  
Params: index – 
        The index at which the bytes will be written
value – 
        The float value to be written
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit, minus three
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Absolute <i>put</i> method for writing a float
     * value&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes four bytes containing the given float value, in the
     * current byte order, into this buffer at the given index.  </p>
     *
     * @param  index
     *         The index at which the bytes will be written
     *
     * @param  value
     *         The float value to be written
     *
     * @return  This buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit,
     *          minus three
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer putFloat(int index, float value);

    Creates a view of this byte buffer as a float buffer.
 The content of the new buffer will start at this buffer's current
position.  Changes to this buffer's content will be visible in the new
buffer, and vice versa; the two buffers' position, limit, and mark
values will be independent.
 The new buffer's position will be zero, its capacity and its limit
will be the number of bytes remaining in this buffer divided by
four, its mark will be undefined, and its byte order will be that
of the byte buffer at the moment the view is created.  The new buffer
will be direct if, and only if, this buffer is direct, and it will be
read-only if, and only if, this buffer is read-only.  
Returns:  A new float buffer/**
     * Creates a view of this byte buffer as a float buffer.
     *
     * <p> The content of the new buffer will start at this buffer's current
     * position.  Changes to this buffer's content will be visible in the new
     * buffer, and vice versa; the two buffers' position, limit, and mark
     * values will be independent.
     *
     * <p> The new buffer's position will be zero, its capacity and its limit
     * will be the number of bytes remaining in this buffer divided by
     * four, its mark will be undefined, and its byte order will be that
     * of the byte buffer at the moment the view is created.  The new buffer
     * will be direct if, and only if, this buffer is direct, and it will be
     * read-only if, and only if, this buffer is read-only.  </p>
     *
     * @return  A new float buffer
     */
    public abstract FloatBuffer asFloatBuffer();


    Relative get method for reading a double value.
 Reads the next eight bytes at this buffer's current position,
composing them into a double value according to the current byte order,
and then increments the position by eight.  
Throws: BufferUnderflowException – 
         If there are fewer than eight bytes
         remaining in this buffer
Returns:  The double value at the buffer's current position/**
     * Relative <i>get</i> method for reading a double value.
     *
     * <p> Reads the next eight bytes at this buffer's current position,
     * composing them into a double value according to the current byte order,
     * and then increments the position by eight.  </p>
     *
     * @return  The double value at the buffer's current position
     *
     * @throws  BufferUnderflowException
     *          If there are fewer than eight bytes
     *          remaining in this buffer
     */
    public abstract double getDouble();

    Relative put method for writing a double
value  (optional operation).
 Writes eight bytes containing the given double value, in the
current byte order, into this buffer at the current position, and then
increments the position by eight.  
Params: value – 
        The double value to be written
Throws: BufferOverflowException – 
         If there are fewer than eight bytes
         remaining in this buffer
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Relative <i>put</i> method for writing a double
     * value&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes eight bytes containing the given double value, in the
     * current byte order, into this buffer at the current position, and then
     * increments the position by eight.  </p>
     *
     * @param  value
     *         The double value to be written
     *
     * @return  This buffer
     *
     * @throws  BufferOverflowException
     *          If there are fewer than eight bytes
     *          remaining in this buffer
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer putDouble(double value);

    Absolute get method for reading a double value.
 Reads eight bytes at the given index, composing them into a
double value according to the current byte order.  
Params: index – 
        The index from which the bytes will be read
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit, minus seven
Returns:  The double value at the given index/**
     * Absolute <i>get</i> method for reading a double value.
     *
     * <p> Reads eight bytes at the given index, composing them into a
     * double value according to the current byte order.  </p>
     *
     * @param  index
     *         The index from which the bytes will be read
     *
     * @return  The double value at the given index
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit,
     *          minus seven
     */
    public abstract double getDouble(int index);

    Absolute put method for writing a double
value  (optional operation).
 Writes eight bytes containing the given double value, in the
current byte order, into this buffer at the given index.  
Params: index – 
        The index at which the bytes will be written
value – 
        The double value to be written
Throws: IndexOutOfBoundsException –  If index is negative or not smaller than the buffer's limit, minus seven
ReadOnlyBufferException – 
         If this buffer is read-only
Returns:  This buffer/**
     * Absolute <i>put</i> method for writing a double
     * value&nbsp;&nbsp;<i>(optional operation)</i>.
     *
     * <p> Writes eight bytes containing the given double value, in the
     * current byte order, into this buffer at the given index.  </p>
     *
     * @param  index
     *         The index at which the bytes will be written
     *
     * @param  value
     *         The double value to be written
     *
     * @return  This buffer
     *
     * @throws  IndexOutOfBoundsException
     *          If {@code index} is negative
     *          or not smaller than the buffer's limit,
     *          minus seven
     *
     * @throws  ReadOnlyBufferException
     *          If this buffer is read-only
     */
    public abstract ByteBuffer putDouble(int index, double value);

    Creates a view of this byte buffer as a double buffer.
 The content of the new buffer will start at this buffer's current
position.  Changes to this buffer's content will be visible in the new
buffer, and vice versa; the two buffers' position, limit, and mark
values will be independent.
 The new buffer's position will be zero, its capacity and its limit
will be the number of bytes remaining in this buffer divided by
eight, its mark will be undefined, and its byte order will be that
of the byte buffer at the moment the view is created.  The new buffer
will be direct if, and only if, this buffer is direct, and it will be
read-only if, and only if, this buffer is read-only.  
Returns:  A new double buffer/**
     * Creates a view of this byte buffer as a double buffer.
     *
     * <p> The content of the new buffer will start at this buffer's current
     * position.  Changes to this buffer's content will be visible in the new
     * buffer, and vice versa; the two buffers' position, limit, and mark
     * values will be independent.
     *
     * <p> The new buffer's position will be zero, its capacity and its limit
     * will be the number of bytes remaining in this buffer divided by
     * eight, its mark will be undefined, and its byte order will be that
     * of the byte buffer at the moment the view is created.  The new buffer
     * will be direct if, and only if, this buffer is direct, and it will be
     * read-only if, and only if, this buffer is read-only.  </p>
     *
     * @return  A new double buffer
     */
    public abstract DoubleBuffer asDoubleBuffer();

}
Params:	capacity – The new buffer's capacity, in bytes
Throws:	IllegalArgumentException – If the `capacity` is a negative integer
Returns:	The new byte buffer
Params:	array – The array that will back the new buffer offset – The offset of the subarray to be used; must be non-negative and no larger than `array.length`. The new buffer's position will be set to this value. length – The length of the subarray to be used; must be non-negative and no larger than `array.length - offset`. The new buffer's limit will be set to `offset + length`.
Throws:	IndexOutOfBoundsException – If the preconditions on the `offset` and `length` parameters do not hold
Returns:	The new byte buffer
Params:	array – The array that will back this buffer
Returns:	The new byte buffer
Params:	index – The position in this buffer at which the content of the new buffer will start; must be non-negative and no larger than `limit()` length – The number of elements the new buffer will contain; must be non-negative and no larger than `limit() - index`
Throws:	IndexOutOfBoundsException – If `index` is negative or greater than `limit()`, `length` is negative, or `length > limit() - index`
Returns:	The new buffer
Since:	13
Throws:	BufferUnderflowException – If the buffer's current position is not smaller than its limit
Returns:	The byte at the buffer's current position
Params:	b – The byte to be written
Throws:	BufferOverflowException – If this buffer's current position is not smaller than its limit ReadOnlyBufferException – If this buffer is read-only
Returns:	This buffer
Params:	index – The index from which the byte will be read
Throws:	IndexOutOfBoundsException – If `index` is negative or not smaller than the buffer's limit
Returns:	The byte at the given index
Params:	index – The index at which the byte will be written b – The byte value to be written
Throws:	IndexOutOfBoundsException – If `index` is negative or not smaller than the buffer's limit ReadOnlyBufferException – If this buffer is read-only
Returns:	This buffer
Params:	dst – The array into which bytes are to be written offset – The offset within the array of the first byte to be written; must be non-negative and no larger than `dst.length` length – The maximum number of bytes to be written to the given array; must be non-negative and no larger than `dst.length - offset`
Throws:	BufferUnderflowException – If there are fewer than `length` bytes remaining in this buffer IndexOutOfBoundsException – If the preconditions on the `offset` and `length` parameters do not hold
Returns:	This buffer
Params:	dst – The destination array
Throws:	BufferUnderflowException – If there are fewer than `length` bytes remaining in this buffer
Returns:	This buffer
Params:	index – The index in this buffer from which the first byte will be read; must be non-negative and less than `limit()` dst – The destination array offset – The offset within the array of the first byte to be written; must be non-negative and less than `dst.length` length – The number of bytes to be written to the given array; must be non-negative and no larger than the smaller of `limit() - index` and `dst.length - offset`
Throws:	IndexOutOfBoundsException – If the preconditions on the `index`, `offset`, and `length` parameters do not hold
Returns:	This buffer
Since:	13
Params:	src – The source buffer from which bytes are to be read; must not be this buffer
Throws:	BufferOverflowException – If there is insufficient space in this buffer for the remaining bytes in the source buffer IllegalArgumentException – If the source buffer is this buffer ReadOnlyBufferException – If this buffer is read-only
Returns:	This buffer
Params:	src – The array from which bytes are to be read offset – The offset within the array of the first byte to be read; must be non-negative and no larger than `src.length` length – The number of bytes to be read from the given array; must be non-negative and no larger than `src.length - offset`
Throws:	BufferOverflowException – If there is insufficient space in this buffer IndexOutOfBoundsException – If the preconditions on the `offset` and `length` parameters do not hold ReadOnlyBufferException – If this buffer is read-only
Returns:	This buffer
Params:	src – The source array
Throws:	BufferOverflowException – If there is insufficient space in this buffer ReadOnlyBufferException – If this buffer is read-only
Returns:	This buffer
Params:	index – The index in this buffer at which the first byte will be written; must be non-negative and less than `limit()` src – The array from which bytes are to be read offset – The offset within the array of the first byte to be read; must be non-negative and less than `src.length` length – The number of bytes to be read from the given array; must be non-negative and no larger than the smaller of `limit() - index` and `src.length - offset`
Throws:	IndexOutOfBoundsException – If the preconditions on the `index`, `offset`, and `length` parameters do not hold ReadOnlyBufferException – If this buffer is read-only
Returns:	This buffer
Since:	13
Throws:	ReadOnlyBufferException – If this buffer is backed by an array but is read-only UnsupportedOperationException – If this buffer is not backed by an accessible array
Returns:	The array that backs this buffer
Params:	ob – The object to which this buffer is to be compared
Returns:	`true` if, and only if, this buffer is equal to the given object
Params:	that – The byte buffer to be tested for a mismatch with this buffer
Returns:	The relative index of the first mismatch between this and the given buffer, otherwise -1 if no mismatch.
Since:	11
Params:	bo – The new byte order, either `BIG_ENDIAN` or `LITTLE_ENDIAN`
Returns:	This buffer
Params:	index – The index to query for alignment offset, must be non-negative, no upper bounds check is performed unitSize – The unit size in bytes, must be a power of `2`
Throws:	IllegalArgumentException – If the index is negative or the unit size is not a power of `2` UnsupportedOperationException – If the native platform does not guarantee stable alignment offset values for the given unit size when managing the memory regions of buffers of the same kind as this buffer (direct or non-direct). For example, if garbage collection would result in the moving of a memory region covered by a non-direct buffer from one location to another and both locations have different alignment characteristics.
See Also:	alignedSlice(int)
API Note:	This method may be utilized to determine if unit size bytes from an index can be accessed atomically, if supported by the native platform.
Implementation Note:	This implementation throws `UnsupportedOperationException` for non-direct buffers when the given unit size is greater then `8`.
Returns:	The indexed byte's memory address modulus the unit size
Since:	9
/

java/ 13/ java.base/java/nio/ByteBuffer.java

Direct vs. non-direct buffers

Access to binary data

Invocation chaining
