java窗口事件

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

public class TestPost {JFrame mainFrame;

public TestPost() {mainFrame = new JFrame("JFrameDemo Title"); // 创建一个JFramemainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// 设置关闭动作mainFrame.setSize(300, 300);// 设置窗口大小mainFrame.setLocationRelativeTo(null);// 使窗口显示在屏幕中央

mainFrame.addWindowListener(new WindowListener() {public void windowOpened(WindowEvent e) {System.out.println("window opened");}

public void windowClosing(WindowEvent e) {System.out.println("window closing");}

public void windowClosed(WindowEvent e) {System.out.println("window closed");}

public void windowIconified(WindowEvent e) {System.out.println("window iconified");}

public void windowDeiconified(WindowEvent e) {System.out.println("window deiconified");}

public void windowActivated(WindowEvent e) {System.out.println("window activated");}

public void windowDeactivated(WindowEvent e) {System.out.println("window deactivated");}});mainFrame.addWindowFocusListener(new WindowFocusListener() {public void windowGainedFocus(WindowEvent e) {System.out.println("gained focus");}

public void windowLostFocus(WindowEvent e) {System.out.println("lost focus");}});mainFrame.addWindowStateListener(new WindowStateListener() {public void windowStateChanged(WindowEvent e) {System.out.println("state changed");}});

mainFrame.setVisible(true);}

public static void main(String[] args) {new TestPost();}}

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