如何在Java应用程序中添加系统退出事件处理机制(转载)

具体演示代码如岁羡下：/**********************************************************************************************************************************************************/package untitled14import java.util.*import java.io.*/*** This application is used to demo how to hook the event of an application*/public class Untitled1 {public Untitled1() {doShutDownWork()}/**************************************************************************** This is the right work that will do before the system shutdown* 这里为了演示，为应用程序的退出增加了一个事件处理，* 当应用程序退出时候，败祥将程序退出的日期写入 d:\t.log文件**************************************************************************/private void doShutDownWork() {Runtime.getRuntime().addShutdownHook(new Thread() {public void run() {try {FileWriter fw = new FileWriter("d:\\t.log")System.out.println("I'm going to end")fw.write("the application ended! " + (new Date()).toString())fw.close()}catch (IOException ex) {}}})}/***************************************************** 这是程序的入口，仅为演示，方法中的代码无关紧察雀搏要***************************************************/

如果是要实现单击按钮退出，建议删掉这行态腊代码绝樱：

if(e.getActionCommand().equals("Eixt"))

或者，将实现接口的两个类变为public的内部类，同时稍微修改下，如下

import java.awt.*

import java.awt.event.*

public class lesson1 {

private Frame f

private Button b

public lesson1() {

f = new Frame("event")

b = new Button("Exit"帆宏滑)

}

public void launchFrame() {

b.addMouseListener(new ButtonHandler())

f.addWindowListener(new ClosingHander())

f.add(b, BorderLayout.CENTER)

f.setSize(400, 300)

f.setVisible(true)

f.setVisible(true)

f.setSize(400, 300)

}

public static void main(String args[]) {

lesson1 aa = new lesson1()

aa.launchFrame()

}

class ButtonHandler extends MouseAdapter {

public void mouseClicked(MouseEvent e)

{

if (e.getSource() == b) {

System.exit(0)

}

}

}

class ClosingHander extends WindowAdapter {

public void windowClosing(WindowEvent e) {

System.exit(0)

}

}

}

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