java JFrame框架的应用

import java.awt.Container; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.JButton; import javax.swing.JFrame; public class JFrame1 implements ActionListener { public JFrame1() { JFrame f = new JFrame("框架实例"); Container contentPane = f.getContentPane(); JButton b = new JButton("点击我可以创建一个新窗口"); b.addActionListener(this); contentPane.add(b); f.pack(); f.show();// 使JFrame变成可看见的(Visible) f.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); } public void actionPerformed(ActionEvent e) { JFrame newf = new JFrame();// 产生一个没有标题的JFrame newf.setSize(200, 200); newf.show(); } public static void main(String[] args) { new JFrame1(); } }