https://openjdk.java.net/ 
final class sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate extends javax.swing.JTextArea
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate
  super_class: javax.swing.JTextArea
{
  final sun.lwawt.LWTextAreaPeer$ScrollableJTextArea this$1;
    descriptor: Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(sun.lwawt.LWTextAreaPeer$ScrollableJTextArea);
    descriptor: (Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate this
         0: .line 224
            aload 0 /* this */
            aload 1
            putfield sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate.this$1:Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea;
         1: .line 225
            aload 0 /* this */
            invokespecial javax.swing.JTextArea.<init>:()V
         2: .line 226
            return
        end local 0 // sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate;
    MethodParameters:
        Name  Flags
      this$0  final

  public void replaceSelection(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate this
        start local 1 // java.lang.String content
         0: .line 230
            aload 0 /* this */
            invokevirtual sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate.getDocument:()Ljavax/swing/text/Document;
            aload 0 /* this */
            getfield sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate.this$1:Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea;
            invokestatic sun.lwawt.LWTextAreaPeer$ScrollableJTextArea.access$0:(Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea;)Lsun/lwawt/LWTextAreaPeer;
            invokeinterface javax.swing.text.Document.removeDocumentListener:(Ljavax/swing/event/DocumentListener;)V
         1: .line 231
            aload 0 /* this */
            aload 1 /* content */
            invokespecial javax.swing.JTextArea.replaceSelection:(Ljava/lang/String;)V
         2: .line 233
            aload 0 /* this */
            getfield sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate.this$1:Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea;
            invokestatic sun.lwawt.LWTextAreaPeer$ScrollableJTextArea.access$0:(Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea;)Lsun/lwawt/LWTextAreaPeer;
            invokevirtual sun.lwawt.LWTextAreaPeer.postTextEvent:()V
         3: .line 234
            aload 0 /* this */
            invokevirtual sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate.getDocument:()Ljavax/swing/text/Document;
            aload 0 /* this */
            getfield sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate.this$1:Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea;
            invokestatic sun.lwawt.LWTextAreaPeer$ScrollableJTextArea.access$0:(Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea;)Lsun/lwawt/LWTextAreaPeer;
            invokeinterface javax.swing.text.Document.addDocumentListener:(Ljavax/swing/event/DocumentListener;)V
         4: .line 235
            return
        end local 1 // java.lang.String content
        end local 0 // sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    5     0     this  Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate;
            0    5     1  content  Ljava/lang/String;
    MethodParameters:
         Name  Flags
      content  

  public boolean hasFocus();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate this
         0: .line 239
            aload 0 /* this */
            getfield sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate.this$1:Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea;
            invokestatic sun.lwawt.LWTextAreaPeer$ScrollableJTextArea.access$0:(Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea;)Lsun/lwawt/LWTextAreaPeer;
            invokevirtual sun.lwawt.LWTextAreaPeer.getTarget:()Ljava/awt/Component;
            checkcast java.awt.TextArea
            invokevirtual java.awt.TextArea.hasFocus:()Z
            ireturn
        end local 0 // sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate;

  public java.awt.Point getLocationOnScreen();
    descriptor: ()Ljava/awt/Point;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate this
         0: .line 244
            aload 0 /* this */
            getfield sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate.this$1:Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea;
            invokestatic sun.lwawt.LWTextAreaPeer$ScrollableJTextArea.access$0:(Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea;)Lsun/lwawt/LWTextAreaPeer;
            invokevirtual sun.lwawt.LWTextAreaPeer.getLocationOnScreen:()Ljava/awt/Point;
            areturn
        end local 0 // sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lsun/lwawt/LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate;
}
SourceFile: "LWTextAreaPeer.java"
NestHost: sun.lwawt.LWTextAreaPeer
InnerClasses:
  final ScrollableJTextArea = sun.lwawt.LWTextAreaPeer$ScrollableJTextArea of sun.lwawt.LWTextAreaPeer
  private final JTextAreaDelegate = sun.lwawt.LWTextAreaPeer$ScrollableJTextArea$JTextAreaDelegate of sun.lwawt.LWTextAreaPeer$ScrollableJTextArea