Java捕获窗口状态事件

package com.han;import java.awt.Frame;import java.awt.event.WindowEvent;import java.awt.event.WindowStateListener;import javax.swing.JFrame;/** * 捕获窗口状态事件 * @author HAN * */public class WindowEvent_2 extends JFrame {/** *  */private static final long serialVersionUID = -2809729177140674307L;public WindowEvent_2() {// TODO Auto-generated constructor stubaddWindowStateListener(new WindowStateListener() {@Overridepublic void windowStateChanged(WindowEvent e) {// TODO Auto-generated method stubint oldState = e.getOldState();int newState = e.getNewState();String from = null;String to;switch (oldState) {case Frame.NORMAL:from = "正常化";break;case Frame.MAXIMIZED_BOTH:from = "最大化";break;case Frame.ICONIFIED:from = "图标化";break;}switch (newState) {case Frame.NORMAL:to = "正常化";break;case Frame.MAXIMIZED_BOTH:to = "最大化";break;default:to = "图标化";break;}System.out.println(from + "---->" + to);}});}/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubWindowEvent_2 frame = new WindowEvent_2();frame.setTitle("捕获窗口状态事件");frame.setVisible(true);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setBounds(0, 0, 300, 100);}}