http://netty.io/netty-all/: Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients. (The Netty Project) 
public final class io.netty.util.internal.AppendableCharSequence implements java.lang.CharSequence, java.lang.Appendable
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: io.netty.util.internal.AppendableCharSequence
  super_class: java.lang.Object
{
  private char[] chars;
    descriptor: [C
    flags: (0x0002) ACC_PRIVATE

  private int pos;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  public void <init>(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // io.netty.util.internal.AppendableCharSequence this
        start local 1 // int length
         0: .line 25
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 26
            iload 1 /* length */
            iconst_1
            if_icmpge 3
         2: .line 27
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc "length: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            iload 1 /* length */
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            ldc " (length: >= 1)"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         3: .line 29
      StackMap locals: io.netty.util.internal.AppendableCharSequence int
      StackMap stack:
            aload 0 /* this */
            iload 1 /* length */
            newarray 5
            putfield io.netty.util.internal.AppendableCharSequence.chars:[C
         4: .line 30
            return
        end local 1 // int length
        end local 0 // io.netty.util.internal.AppendableCharSequence this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    5     0    this  Lio/netty/util/internal/AppendableCharSequence;
            0    5     1  length  I
    MethodParameters:
        Name  Flags
      length  

  private void <init>(char[]);
    descriptor: ([C)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // io.netty.util.internal.AppendableCharSequence this
        start local 1 // char[] chars
         0: .line 32
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 33
            aload 1 /* chars */
            arraylength
            iconst_1
            if_icmpge 3
         2: .line 34
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc "length: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 1 /* chars */
            arraylength
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            ldc " (length: >= 1)"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         3: .line 36
      StackMap locals: io.netty.util.internal.AppendableCharSequence char[]
      StackMap stack:
            aload 0 /* this */
            aload 1 /* chars */
            putfield io.netty.util.internal.AppendableCharSequence.chars:[C
         4: .line 37
            aload 0 /* this */
            aload 1 /* chars */
            arraylength
            putfield io.netty.util.internal.AppendableCharSequence.pos:I
         5: .line 38
            return
        end local 1 // char[] chars
        end local 0 // io.netty.util.internal.AppendableCharSequence this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    6     0   this  Lio/netty/util/internal/AppendableCharSequence;
            0    6     1  chars  [C
    MethodParameters:
       Name  Flags
      chars  

  public int length();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.util.internal.AppendableCharSequence this
         0: .line 42
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.pos:I
            ireturn
        end local 0 // io.netty.util.internal.AppendableCharSequence this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/util/internal/AppendableCharSequence;

  public char charAt(int);
    descriptor: (I)C
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.util.internal.AppendableCharSequence this
        start local 1 // int index
         0: .line 47
            iload 1 /* index */
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.pos:I
            if_icmple 2
         1: .line 48
            new java.lang.IndexOutOfBoundsException
            dup
            invokespecial java.lang.IndexOutOfBoundsException.<init>:()V
            athrow
         2: .line 50
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            iload 1 /* index */
            caload
            ireturn
        end local 1 // int index
        end local 0 // io.netty.util.internal.AppendableCharSequence this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    3     0   this  Lio/netty/util/internal/AppendableCharSequence;
            0    3     1  index  I
    MethodParameters:
       Name  Flags
      index  

  public char charAtUnsafe(int);
    descriptor: (I)C
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.util.internal.AppendableCharSequence this
        start local 1 // int index
         0: .line 61
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            iload 1 /* index */
            caload
            ireturn
        end local 1 // int index
        end local 0 // io.netty.util.internal.AppendableCharSequence this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lio/netty/util/internal/AppendableCharSequence;
            0    1     1  index  I
    MethodParameters:
       Name  Flags
      index  

  public io.netty.util.internal.AppendableCharSequence subSequence(int, int);
    descriptor: (II)Lio/netty/util/internal/AppendableCharSequence;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=3, args_size=3
        start local 0 // io.netty.util.internal.AppendableCharSequence this
        start local 1 // int start
        start local 2 // int end
         0: .line 66
            new io.netty.util.internal.AppendableCharSequence
            dup
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            iload 1 /* start */
            iload 2 /* end */
            invokestatic java.util.Arrays.copyOfRange:([CII)[C
            invokespecial io.netty.util.internal.AppendableCharSequence.<init>:([C)V
            areturn
        end local 2 // int end
        end local 1 // int start
        end local 0 // io.netty.util.internal.AppendableCharSequence this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lio/netty/util/internal/AppendableCharSequence;
            0    1     1  start  I
            0    1     2    end  I
    MethodParameters:
       Name  Flags
      start  
      end    

  public io.netty.util.internal.AppendableCharSequence append(char);
    descriptor: (C)Lio/netty/util/internal/AppendableCharSequence;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=3, args_size=2
        start local 0 // io.netty.util.internal.AppendableCharSequence this
        start local 1 // char c
         0: .line 71
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.pos:I
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            arraylength
            if_icmpne 4
         1: .line 72
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            astore 2 /* old */
        start local 2 // char[] old
         2: .line 73
            aload 0 /* this */
            aload 2 /* old */
            arraylength
            iconst_1
            ishl
            newarray 5
            putfield io.netty.util.internal.AppendableCharSequence.chars:[C
         3: .line 74
            aload 2 /* old */
            iconst_0
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            iconst_0
            aload 2 /* old */
            arraylength
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        end local 2 // char[] old
         4: .line 76
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            aload 0 /* this */
            dup
            getfield io.netty.util.internal.AppendableCharSequence.pos:I
            dup_x1
            iconst_1
            iadd
            putfield io.netty.util.internal.AppendableCharSequence.pos:I
            iload 1 /* c */
            castore
         5: .line 77
            aload 0 /* this */
            areturn
        end local 1 // char c
        end local 0 // io.netty.util.internal.AppendableCharSequence this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lio/netty/util/internal/AppendableCharSequence;
            0    6     1     c  C
            2    4     2   old  [C
    MethodParameters:
      Name  Flags
      c     

  public io.netty.util.internal.AppendableCharSequence append(java.lang.CharSequence);
    descriptor: (Ljava/lang/CharSequence;)Lio/netty/util/internal/AppendableCharSequence;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // io.netty.util.internal.AppendableCharSequence this
        start local 1 // java.lang.CharSequence csq
         0: .line 82
            aload 0 /* this */
            aload 1 /* csq */
            iconst_0
            aload 1 /* csq */
            invokeinterface java.lang.CharSequence.length:()I
            invokevirtual io.netty.util.internal.AppendableCharSequence.append:(Ljava/lang/CharSequence;II)Lio/netty/util/internal/AppendableCharSequence;
            areturn
        end local 1 // java.lang.CharSequence csq
        end local 0 // io.netty.util.internal.AppendableCharSequence this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/util/internal/AppendableCharSequence;
            0    1     1   csq  Ljava/lang/CharSequence;
    MethodParameters:
      Name  Flags
      csq   

  public io.netty.util.internal.AppendableCharSequence append(java.lang.CharSequence, int, int);
    descriptor: (Ljava/lang/CharSequence;II)Lio/netty/util/internal/AppendableCharSequence;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=7, args_size=4
        start local 0 // io.netty.util.internal.AppendableCharSequence this
        start local 1 // java.lang.CharSequence csq
        start local 2 // int start
        start local 3 // int end
         0: .line 87
            aload 1 /* csq */
            invokeinterface java.lang.CharSequence.length:()I
            iload 3 /* end */
            if_icmpge 2
         1: .line 88
            new java.lang.IndexOutOfBoundsException
            dup
            invokespecial java.lang.IndexOutOfBoundsException.<init>:()V
            athrow
         2: .line 90
      StackMap locals:
      StackMap stack:
            iload 3 /* end */
            iload 2 /* start */
            isub
            istore 4 /* length */
        start local 4 // int length
         3: .line 91
            iload 4 /* length */
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            arraylength
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.pos:I
            isub
            if_icmple 5
         4: .line 92
            aload 0 /* this */
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.pos:I
            iload 4 /* length */
            iadd
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.pos:I
            invokestatic io.netty.util.internal.AppendableCharSequence.expand:([CII)[C
            putfield io.netty.util.internal.AppendableCharSequence.chars:[C
         5: .line 94
      StackMap locals: int
      StackMap stack:
            aload 1 /* csq */
            instanceof io.netty.util.internal.AppendableCharSequence
            ifeq 11
         6: .line 96
            aload 1 /* csq */
            checkcast io.netty.util.internal.AppendableCharSequence
            astore 5 /* seq */
        start local 5 // io.netty.util.internal.AppendableCharSequence seq
         7: .line 97
            aload 5 /* seq */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            astore 6 /* src */
        start local 6 // char[] src
         8: .line 98
            aload 6 /* src */
            iload 2 /* start */
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.pos:I
            iload 4 /* length */
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
         9: .line 99
            aload 0 /* this */
            dup
            getfield io.netty.util.internal.AppendableCharSequence.pos:I
            iload 4 /* length */
            iadd
            putfield io.netty.util.internal.AppendableCharSequence.pos:I
        10: .line 100
            aload 0 /* this */
            areturn
        end local 6 // char[] src
        end local 5 // io.netty.util.internal.AppendableCharSequence seq
        11: .line 102
      StackMap locals:
      StackMap stack:
            iload 2 /* start */
            istore 5 /* i */
        start local 5 // int i
        12: goto 15
        13: .line 103
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            aload 0 /* this */
            dup
            getfield io.netty.util.internal.AppendableCharSequence.pos:I
            dup_x1
            iconst_1
            iadd
            putfield io.netty.util.internal.AppendableCharSequence.pos:I
            aload 1 /* csq */
            iload 5 /* i */
            invokeinterface java.lang.CharSequence.charAt:(I)C
            castore
        14: .line 102
            iinc 5 /* i */ 1
      StackMap locals:
      StackMap stack:
        15: iload 5 /* i */
            iload 3 /* end */
            if_icmplt 13
        end local 5 // int i
        16: .line 106
            aload 0 /* this */
            areturn
        end local 4 // int length
        end local 3 // int end
        end local 2 // int start
        end local 1 // java.lang.CharSequence csq
        end local 0 // io.netty.util.internal.AppendableCharSequence this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0   17     0    this  Lio/netty/util/internal/AppendableCharSequence;
            0   17     1     csq  Ljava/lang/CharSequence;
            0   17     2   start  I
            0   17     3     end  I
            3   17     4  length  I
            7   11     5     seq  Lio/netty/util/internal/AppendableCharSequence;
            8   11     6     src  [C
           12   16     5       i  I
    MethodParameters:
       Name  Flags
      csq    
      start  
      end    

  public void reset();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.util.internal.AppendableCharSequence this
         0: .line 114
            aload 0 /* this */
            iconst_0
            putfield io.netty.util.internal.AppendableCharSequence.pos:I
         1: .line 115
            return
        end local 0 // io.netty.util.internal.AppendableCharSequence this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/util/internal/AppendableCharSequence;

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // io.netty.util.internal.AppendableCharSequence this
         0: .line 119
            new java.lang.String
            dup
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            iconst_0
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.pos:I
            invokespecial java.lang.String.<init>:([CII)V
            areturn
        end local 0 // io.netty.util.internal.AppendableCharSequence this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/util/internal/AppendableCharSequence;

  public java.lang.String substring(int, int);
    descriptor: (II)Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=4, args_size=3
        start local 0 // io.netty.util.internal.AppendableCharSequence this
        start local 1 // int start
        start local 2 // int end
         0: .line 126
            iload 2 /* end */
            iload 1 /* start */
            isub
            istore 3 /* length */
        start local 3 // int length
         1: .line 127
            iload 1 /* start */
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.pos:I
            if_icmpgt 2
            iload 3 /* length */
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.pos:I
            if_icmple 3
         2: .line 128
      StackMap locals: int
      StackMap stack:
            new java.lang.IndexOutOfBoundsException
            dup
            invokespecial java.lang.IndexOutOfBoundsException.<init>:()V
            athrow
         3: .line 130
      StackMap locals:
      StackMap stack:
            new java.lang.String
            dup
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            iload 1 /* start */
            iload 3 /* length */
            invokespecial java.lang.String.<init>:([CII)V
            areturn
        end local 3 // int length
        end local 2 // int end
        end local 1 // int start
        end local 0 // io.netty.util.internal.AppendableCharSequence this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    4     0    this  Lio/netty/util/internal/AppendableCharSequence;
            0    4     1   start  I
            0    4     2     end  I
            1    4     3  length  I
    MethodParameters:
       Name  Flags
      start  
      end    

  public java.lang.String subStringUnsafe(int, int);
    descriptor: (II)Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=3, args_size=3
        start local 0 // io.netty.util.internal.AppendableCharSequence this
        start local 1 // int start
        start local 2 // int end
         0: .line 139
            new java.lang.String
            dup
            aload 0 /* this */
            getfield io.netty.util.internal.AppendableCharSequence.chars:[C
            iload 1 /* start */
            iload 2 /* end */
            iload 1 /* start */
            isub
            invokespecial java.lang.String.<init>:([CII)V
            areturn
        end local 2 // int end
        end local 1 // int start
        end local 0 // io.netty.util.internal.AppendableCharSequence this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lio/netty/util/internal/AppendableCharSequence;
            0    1     1  start  I
            0    1     2    end  I
    MethodParameters:
       Name  Flags
      start  
      end    

  private static char[] expand(char[], int, int);
    descriptor: ([CII)[C
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=5, args_size=3
        start local 0 // char[] array
        start local 1 // int neededSpace
        start local 2 // int size
         0: .line 143
            aload 0 /* array */
            arraylength
            istore 3 /* newCapacity */
        start local 3 // int newCapacity
         1: .line 146
      StackMap locals: int
      StackMap stack:
            iload 3 /* newCapacity */
            iconst_1
            ishl
            istore 3 /* newCapacity */
         2: .line 148
            iload 3 /* newCapacity */
            ifge 4
         3: .line 149
            new java.lang.IllegalStateException
            dup
            invokespecial java.lang.IllegalStateException.<init>:()V
            athrow
         4: .line 152
      StackMap locals:
      StackMap stack:
            iload 1 /* neededSpace */
            iload 3 /* newCapacity */
         5: .line 144
            if_icmpgt 1
         6: .line 154
            iload 3 /* newCapacity */
            newarray 5
            astore 4 /* newArray */
        start local 4 // char[] newArray
         7: .line 155
            aload 0 /* array */
            iconst_0
            aload 4 /* newArray */
            iconst_0
            iload 2 /* size */
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
         8: .line 157
            aload 4 /* newArray */
            areturn
        end local 4 // char[] newArray
        end local 3 // int newCapacity
        end local 2 // int size
        end local 1 // int neededSpace
        end local 0 // char[] array
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    9     0        array  [C
            0    9     1  neededSpace  I
            0    9     2         size  I
            1    9     3  newCapacity  I
            7    9     4     newArray  [C
    MethodParameters:
             Name  Flags
      array        
      neededSpace  
      size         

  public java.lang.CharSequence subSequence(int, int);
    descriptor: (II)Ljava/lang/CharSequence;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=3, locals=3, args_size=3
         0: .line 1
            aload 0
            iload 1
            iload 2
            invokevirtual io.netty.util.internal.AppendableCharSequence.subSequence:(II)Lio/netty/util/internal/AppendableCharSequence;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public java.lang.Appendable append(java.lang.CharSequence, int, int);
    descriptor: (Ljava/lang/CharSequence;II)Ljava/lang/Appendable;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=4, locals=4, args_size=4
         0: .line 1
            aload 0
            aload 1
            iload 2
            iload 3
            invokevirtual io.netty.util.internal.AppendableCharSequence.append:(Ljava/lang/CharSequence;II)Lio/netty/util/internal/AppendableCharSequence;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    Exceptions:
      throws java.io.IOException

  public java.lang.Appendable append(java.lang.CharSequence);
    descriptor: (Ljava/lang/CharSequence;)Ljava/lang/Appendable;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            invokevirtual io.netty.util.internal.AppendableCharSequence.append:(Ljava/lang/CharSequence;)Lio/netty/util/internal/AppendableCharSequence;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    Exceptions:
      throws java.io.IOException

  public java.lang.Appendable append(char);
    descriptor: (C)Ljava/lang/Appendable;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            iload 1
            invokevirtual io.netty.util.internal.AppendableCharSequence.append:(C)Lio/netty/util/internal/AppendableCharSequence;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    Exceptions:
      throws java.io.IOException
}
SourceFile: "AppendableCharSequence.java"