java JInternalFrame

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class A02 extends JFrame{
   
    JInternalFrame inframe;
    JLabel l;
    ImageIcon icon;
    // 여기 수정
    final JDesktopPane desktop;
    public A02(){
    super("A02 ");
    JMenuBar bar = new JMenuBar();
    setJMenuBar(bar);
    JMenu addMenu = new JMenu("추가");
    JMenuItem newInFrame = new JMenuItem("내부프레임추가");
    addMenu.add(newInFrame);
    bar.add(addMenu);
    desktop = new JDesktopPane();
    getContentPane().add(desktop,BorderLayout.CENTER);
    //이부분 추가
    addFrame();
    newInFrame.addActionListener(
            new ActionListener(){
        public void actionPerformed(ActionEvent e){
         
         
            }
            }
            );
       
        setSize(300,200);
        setVisible(true);
        }
    //여기도 추가
    private void addFrame() {
  // TODO Auto-generated method stub
     inframe = new JInternalFrame("내부프레임",true,true,true);
        icon = new ImageIcon("c:/android.jpg");
        l = new JLabel(icon);
        inframe.getContentPane().add(l,BorderLayout.CENTER);
        inframe.setSize(200,100);
        inframe.show();
        desktop.add(inframe);
 }
 public static void main(String [] args){
    A02 jinter = new A02();
    jinter.setDefaultCloseOperation(EXIT_ON_CLOSE);
    }
}