public class sun.misc.IOUtils
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: sun.misc.IOUtils
  super_class: java.lang.Object
{
  private static final int DEFAULT_BUFFER_SIZE;
    descriptor: I
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 8192

  private static final int MAX_BUFFER_SIZE;
    descriptor: I
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 2147483639

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // sun.misc.IOUtils this
         0: .line 41
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // sun.misc.IOUtils this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lsun/misc/IOUtils;

  public static byte[] readExactlyNBytes(java.io.InputStream, int);
    descriptor: (Ljava/io/InputStream;I)[B
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=3, args_size=2
        start local 0 // java.io.InputStream is
        start local 1 // int length
         0: .line 71
            iload 1 /* length */
            ifge 2
         1: .line 72
            new java.io.IOException
            dup
            new java.lang.StringBuilder
            dup
            ldc "length cannot be negative: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            iload 1 /* length */
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.io.IOException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 74
      StackMap locals:
      StackMap stack:
            aload 0 /* is */
            iload 1 /* length */
            invokestatic sun.misc.IOUtils.readNBytes:(Ljava/io/InputStream;I)[B
            astore 2 /* data */
        start local 2 // byte[] data
         3: .line 75
            aload 2 /* data */
            arraylength
            iload 1 /* length */
            if_icmpge 5
         4: .line 76
            new java.io.EOFException
            dup
            invokespecial java.io.EOFException.<init>:()V
            athrow
         5: .line 78
      StackMap locals: byte[]
      StackMap stack:
            aload 2 /* data */
            areturn
        end local 2 // byte[] data
        end local 1 // int length
        end local 0 // java.io.InputStream is
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    6     0      is  Ljava/io/InputStream;
            0    6     1  length  I
            3    6     2    data  [B
    Exceptions:
      throws java.io.IOException
    MethodParameters:
        Name  Flags
      is      
      length  

  public static byte[] readAllBytes(java.io.InputStream);
    descriptor: (Ljava/io/InputStream;)[B
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // java.io.InputStream is
         0: .line 116
            aload 0 /* is */
            ldc 2147483647
            invokestatic sun.misc.IOUtils.readNBytes:(Ljava/io/InputStream;I)[B
            areturn
        end local 0 // java.io.InputStream is
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0    is  Ljava/io/InputStream;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      is    

  public static byte[] readNBytes(java.io.InputStream, int);
    descriptor: (Ljava/io/InputStream;I)[B
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=11, args_size=2
        start local 0 // java.io.InputStream is
        start local 1 // int len
         0: .line 166
            iload 1 /* len */
            ifge 2
         1: .line 167
            new java.lang.IllegalArgumentException
            dup
            ldc "len < 0"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 170
      StackMap locals:
      StackMap stack:
            aconst_null
            astore 2 /* bufs */
        start local 2 // java.util.List bufs
         3: .line 171
            aconst_null
            astore 3 /* result */
        start local 3 // byte[] result
         4: .line 172
            iconst_0
            istore 4 /* total */
        start local 4 // int total
         5: .line 173
            iload 1 /* len */
            istore 5 /* remaining */
        start local 5 // int remaining
         6: .line 176
      StackMap locals: java.io.InputStream int java.util.List byte[] int int
      StackMap stack:
            iload 5 /* remaining */
            sipush 8192
            invokestatic java.lang.Math.min:(II)I
            newarray 8
            astore 7 /* buf */
        start local 7 // byte[] buf
         7: .line 177
            iconst_0
            istore 8 /* nread */
        start local 8 // int nread
         8: .line 180
            goto 11
        start local 6 // int n
         9: .line 182
      StackMap locals: int byte[] int
      StackMap stack:
            iload 8 /* nread */
            iload 6 /* n */
            iadd
            istore 8 /* nread */
        10: .line 183
            iload 5 /* remaining */
            iload 6 /* n */
            isub
            istore 5 /* remaining */
        end local 6 // int n
        11: .line 180
      StackMap locals: java.io.InputStream int java.util.List byte[] int int top byte[] int
      StackMap stack:
            aload 0 /* is */
            aload 7 /* buf */
            iload 8 /* nread */
        12: .line 181
            aload 7 /* buf */
            arraylength
            iload 8 /* nread */
            isub
            iload 5 /* remaining */
            invokestatic java.lang.Math.min:(II)I
        13: .line 180
            invokevirtual java.io.InputStream.read:([BII)I
            dup
            istore 6 /* n */
        start local 6 // int n
        14: ifgt 9
        15: .line 186
            iload 8 /* nread */
            ifle 26
        16: .line 187
            ldc 2147483639
            iload 4 /* total */
            isub
            iload 8 /* nread */
            if_icmpge 18
        17: .line 188
            new java.lang.OutOfMemoryError
            dup
            ldc "Required array size too large"
            invokespecial java.lang.OutOfMemoryError.<init>:(Ljava/lang/String;)V
            athrow
        18: .line 190
      StackMap locals: java.io.InputStream int java.util.List byte[] int int int byte[] int
      StackMap stack:
            iload 4 /* total */
            iload 8 /* nread */
            iadd
            istore 4 /* total */
        19: .line 191
            aload 3 /* result */
            ifnonnull 22
        20: .line 192
            aload 7 /* buf */
            astore 3 /* result */
        21: .line 193
            goto 26
        22: .line 194
      StackMap locals:
      StackMap stack:
            aload 2 /* bufs */
            ifnonnull 25
        23: .line 195
            new java.util.ArrayList
            dup
            invokespecial java.util.ArrayList.<init>:()V
            astore 2 /* bufs */
        24: .line 196
            aload 2 /* bufs */
            aload 3 /* result */
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
        25: .line 198
      StackMap locals:
      StackMap stack:
            aload 2 /* bufs */
            aload 7 /* buf */
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
        end local 8 // int nread
        end local 7 // byte[] buf
        26: .line 203
      StackMap locals:
      StackMap stack:
            iload 6 /* n */
            iflt 28
            iload 5 /* remaining */
        27: .line 175
            ifgt 6
        28: .line 205
      StackMap locals:
      StackMap stack:
            aload 2 /* bufs */
            ifnonnull 35
        29: .line 206
            aload 3 /* result */
            ifnonnull 31
        30: .line 207
            iconst_0
            newarray 8
            areturn
        31: .line 209
      StackMap locals:
      StackMap stack:
            aload 3 /* result */
            arraylength
            iload 4 /* total */
            if_icmpne 33
        32: .line 210
            aload 3 /* result */
            goto 34
      StackMap locals:
      StackMap stack:
        33: aload 3 /* result */
            iload 4 /* total */
            invokestatic java.util.Arrays.copyOf:([BI)[B
        34: .line 209
      StackMap locals:
      StackMap stack: byte[]
            areturn
        35: .line 213
      StackMap locals:
      StackMap stack:
            iload 4 /* total */
            newarray 8
            astore 3 /* result */
        36: .line 214
            iconst_0
            istore 7 /* offset */
        start local 7 // int offset
        37: .line 215
            iload 4 /* total */
            istore 5 /* remaining */
        38: .line 216
            aload 2 /* bufs */
            invokeinterface java.util.List.iterator:()Ljava/util/Iterator;
            astore 9
            goto 44
      StackMap locals: java.io.InputStream int java.util.List byte[] int int int int top java.util.Iterator
      StackMap stack:
        39: aload 9
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast byte[]
            astore 8 /* b */
        start local 8 // byte[] b
        40: .line 217
            aload 8 /* b */
            arraylength
            iload 5 /* remaining */
            invokestatic java.lang.Math.min:(II)I
            istore 10 /* count */
        start local 10 // int count
        41: .line 218
            aload 8 /* b */
            iconst_0
            aload 3 /* result */
            iload 7 /* offset */
            iload 10 /* count */
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        42: .line 219
            iload 7 /* offset */
            iload 10 /* count */
            iadd
            istore 7 /* offset */
        43: .line 220
            iload 5 /* remaining */
            iload 10 /* count */
            isub
            istore 5 /* remaining */
        end local 10 // int count
        end local 8 // byte[] b
        44: .line 216
      StackMap locals:
      StackMap stack:
            aload 9
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 39
        45: .line 223
            aload 3 /* result */
            areturn
        end local 7 // int offset
        end local 6 // int n
        end local 5 // int remaining
        end local 4 // int total
        end local 3 // byte[] result
        end local 2 // java.util.List bufs
        end local 1 // int len
        end local 0 // java.io.InputStream is
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   46     0         is  Ljava/io/InputStream;
            0   46     1        len  I
            3   46     2       bufs  Ljava/util/List<[B>;
            4   46     3     result  [B
            5   46     4      total  I
            6   46     5  remaining  I
            9   11     6          n  I
           14   46     6          n  I
            7   26     7        buf  [B
            8   26     8      nread  I
           37   46     7     offset  I
           40   44     8          b  [B
           41   44    10      count  I
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      is    
      len   

  public static int readNBytes(java.io.InputStream, byte[], int, int);
    descriptor: (Ljava/io/InputStream;[BII)I
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=6, args_size=4
        start local 0 // java.io.InputStream is
        start local 1 // byte[] b
        start local 2 // int off
        start local 3 // int len
         0: .line 271
            aload 1 /* b */
            invokestatic java.util.Objects.requireNonNull:(Ljava/lang/Object;)Ljava/lang/Object;
            pop
         1: .line 272
            iload 2 /* off */
            iflt 2
            iload 3 /* len */
            iflt 2
            iload 3 /* len */
            aload 1 /* b */
            arraylength
            iload 2 /* off */
            isub
            if_icmple 3
         2: .line 273
      StackMap locals:
      StackMap stack:
            new java.lang.IndexOutOfBoundsException
            dup
            invokespecial java.lang.IndexOutOfBoundsException.<init>:()V
            athrow
         3: .line 274
      StackMap locals:
      StackMap stack:
            iconst_0
            istore 4 /* n */
        start local 4 // int n
         4: .line 275
            goto 9
         5: .line 276
      StackMap locals: int
      StackMap stack:
            aload 0 /* is */
            aload 1 /* b */
            iload 2 /* off */
            iload 4 /* n */
            iadd
            iload 3 /* len */
            iload 4 /* n */
            isub
            invokevirtual java.io.InputStream.read:([BII)I
            istore 5 /* count */
        start local 5 // int count
         6: .line 277
            iload 5 /* count */
            ifge 8
         7: .line 278
            goto 10
         8: .line 279
      StackMap locals: int
      StackMap stack:
            iload 4 /* n */
            iload 5 /* count */
            iadd
            istore 4 /* n */
        end local 5 // int count
         9: .line 275
      StackMap locals:
      StackMap stack:
            iload 4 /* n */
            iload 3 /* len */
            if_icmplt 5
        10: .line 281
      StackMap locals:
      StackMap stack:
            iload 4 /* n */
            ireturn
        end local 4 // int n
        end local 3 // int len
        end local 2 // int off
        end local 1 // byte[] b
        end local 0 // java.io.InputStream is
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0   11     0     is  Ljava/io/InputStream;
            0   11     1      b  [B
            0   11     2    off  I
            0   11     3    len  I
            4   11     4      n  I
            6    9     5  count  I
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      is    
      b     
      off   
      len   

  public static byte[] readFully(java.io.InputStream, int, boolean);
    descriptor: (Ljava/io/InputStream;IZ)[B
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=3, args_size=3
        start local 0 // java.io.InputStream is
        start local 1 // int length
        start local 2 // boolean readAll
         0: .line 304
            iload 1 /* length */
            ifge 2
         1: .line 305
            new java.io.IOException
            dup
            new java.lang.StringBuilder
            dup
            ldc "length cannot be negative: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            iload 1 /* length */
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.io.IOException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 307
      StackMap locals:
      StackMap stack:
            iload 2 /* readAll */
            ifeq 4
         3: .line 308
            aload 0 /* is */
            iload 1 /* length */
            invokestatic sun.misc.IOUtils.readExactlyNBytes:(Ljava/io/InputStream;I)[B
            areturn
         4: .line 310
      StackMap locals:
      StackMap stack:
            aload 0 /* is */
            iload 1 /* length */
            invokestatic sun.misc.IOUtils.readNBytes:(Ljava/io/InputStream;I)[B
            areturn
        end local 2 // boolean readAll
        end local 1 // int length
        end local 0 // java.io.InputStream is
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    5     0       is  Ljava/io/InputStream;
            0    5     1   length  I
            0    5     2  readAll  Z
    Exceptions:
      throws java.io.IOException
    MethodParameters:
         Name  Flags
      is       
      length   
      readAll  
}
SourceFile: "IOUtils.java"