Program: 35210
Project: 35210
Buggy source:
public void mousePressed(MouseEvent e){
  if (SwingUtilities.isRightMouseButton(e)) {
    TCBEntry selected=TCBList.this.getSelectedValue();
    JPopupMenu menu=new JPopupMenu();
    if (selected != null) {
      JMenuItem remove=new JMenuItem(JByteMod.res.getResource("String_Node_Str"));
      remove.addActionListener(new ActionListener(){
        public void actionPerformed(        ActionEvent e){
          ClassNode cn=selected.getCn();
          MethodNode mn=selected.getMn();
          mn.tryCatchBlocks.remove(selected.getTcbn());
          TCBList.this.addNodes(cn,mn);
        }
      }
);
      menu.add(remove);
      JMenuItem edit=new JMenuItem(JByteMod.res.getResource("String_Node_Str"));
      edit.addActionListener(new ActionListener(){
        public void actionPerformed(        ActionEvent e){
          try {
            if (selected.getTcbn().type == null) {
              selected.getTcbn().type="String_Node_Str";
            }
            new InsnEditDialogue(mn,selected.getTcbn()).open();
            if (selected.getTcbn().type != null && selected.getTcbn().type.equals("String_Node_Str")) {
              selected.getTcbn().type=null;
            }
          }
 catch (          Exception ex) {
            new ErrorDisplay(ex);
          }
          TCBList.this.addNodes(cn,mn);
        }
      }
);
      menu.add(edit);
    }
    JMenuItem insert=new JMenuItem(selected != null ? JByteMod.res.getResource("String_Node_Str") : JByteMod.res.getResource("String_Node_Str"));
    insert.addActionListener(new ActionListener(){
      public void actionPerformed(      ActionEvent e){
        try {
          TryCatchBlockNode tcbn=new TryCatchBlockNode(null,null,null,null);
          if (new InsnEditDialogue(mn,tcbn).open())           if (tcbn.handler != null && tcbn.start != null && tcbn.end != null) {
            if (tcbn.type != null && tcbn.type.equals("String_Node_Str")) {
              tcbn.type=null;
            }
            mn.tryCatchBlocks.add(tcbn);
          }
        }
 catch (        Exception ex) {
          new ErrorDisplay(ex);
        }
        TCBList.this.addNodes(cn,mn);
      }
    }
);
    menu.add(insert);
    menu.show(TCBList.this,e.getX(),e.getY());
  }
}

Fixed version (ground truth):
public void mousePressed(MouseEvent e){
  if (SwingUtilities.isRightMouseButton(e)) {
    TCBEntry selected=TCBList.this.getSelectedValue();
    JPopupMenu menu=new JPopupMenu();
    if (selected != null) {
      JMenuItem remove=new JMenuItem(JByteMod.res.getResource("String_Node_Str"));
      remove.addActionListener(new ActionListener(){
        public void actionPerformed(        ActionEvent e){
          ClassNode cn=selected.getCn();
          MethodNode mn=selected.getMn();
          mn.tryCatchBlocks.remove(selected.getTcbn());
          TCBList.this.addNodes(cn,mn);
        }
      }
);
      menu.add(remove);
      JMenuItem edit=new JMenuItem(JByteMod.res.getResource("String_Node_Str"));
      edit.addActionListener(new ActionListener(){
        public void actionPerformed(        ActionEvent e){
          try {
            if (selected.getTcbn().type == null) {
              selected.getTcbn().type="String_Node_Str";
            }
            new InsnEditDialogue(mn,selected.getTcbn()).open();
            if (selected.getTcbn().type != null && selected.getTcbn().type.equals("String_Node_Str")) {
              selected.getTcbn().type=null;
            }
          }
 catch (          Exception ex) {
            new ErrorDisplay(ex);
          }
          TCBList.this.addNodes(cn,mn);
        }
      }
);
      menu.add(edit);
    }
    JMenuItem insert=new JMenuItem(selected != null ? JByteMod.res.getResource("String_Node_Str") : JByteMod.res.getResource("String_Node_Str"));
    insert.addActionListener(new ActionListener(){
      public void actionPerformed(      ActionEvent e){
        try {
          TryCatchBlockNode tcbn=new TryCatchBlockNode(null,null,null,"String_Node_Str");
          if (new InsnEditDialogue(mn,tcbn).open())           if (tcbn.handler != null && tcbn.start != null && tcbn.end != null) {
            if (tcbn.type != null && tcbn.type.equals("String_Node_Str")) {
              tcbn.type=null;
            }
            mn.tryCatchBlocks.add(tcbn);
          }
        }
 catch (        Exception ex) {
          new ErrorDisplay(ex);
        }
        TCBList.this.addNodes(cn,mn);
      }
    }
);
    menu.add(insert);
    menu.show(TCBList.this,e.getX(),e.getY());
  }
}