import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.FlowLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.*;

public class jdesktoppane extends JFrame{

public jdesktoppane() {

super();

setTitle("桌面面板和内部窗体");

setBounds(100, 100, 400, 300);

setDefaultCloseOperation(EXIT_ON_CLOSE);

setVisible(true);

Container c = getContentPane();

JDesktopPane desk = new JDesktopPane();

c.add(desk,BorderLayout.CENTER);

JPanel jp = new JPanel();

jp.setLayout(new FlowLayout(0));

c.add(jp, BorderLayout.NORTH);

JButton jb1 = new JButton("天");

JButton jb2 = new JButton("地");

JButton jb3 = new JButton("人");

jp.add(jb1);

jp.add(jb2);

jp.add(jb3);

jb1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

JInternalFrame inframe = new JInternalFrame();

desk.add(inframe);

inframe.setBounds(10, 10, 200, 100);

inframe.setTitle("内部窗体1");

inframe.setVisible(true);

inframe.setResizable(true);

inframe.setClosable(true);

inframe.setMaximizable(true);

inframe.setIconifiable(true);

}

});

jb2.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

JInternalFrame inframe1 = new JInternalFrame("内部窗体2",true,true,true,true);

inframe1.setBounds(20,20,200,100);

inframe1.setVisible(true);

desk.add(inframe1);

}

});

jb3.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

JInternalFrame inframe2 = new JInternalFrame("内部窗体3",true,true,true,true);

inframe2.setBounds(30,30,200,100);

inframe2.setVisible(true);

desk.add(inframe2);

}

});

}

public static void main(String[] args) {

          new jdesktoppane();

}

}