JFrame关不掉了！

Question

protected void processWindowEvent(WindowEvent arg0) 
{
if(arg0.getNewState()==WindowEvent.WINDOW_CLOSED)
System.out.println("ok");
}
我想让窗口关闭时候实现一个功能！
但是现在写了这个方法以后ok不但没有执行~
窗口也关不掉了！
我想让另一个窗口激活！

Answer 1

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Application extends JFrame
{
public Application() 
{
this.ma=ma;
JFrame.setDefaultLookAndFeelDecorated(true);//改变感官
this.setResizable(false);//关闭最大化
this.setSize(320,300);//改变大小
Setting.center(this,320,300);//居中（Setting设置类）
this.setTitle("QQ用户注册");//改变名称
this.setVisible(true);//显示
}
public static void main(String[] args) {
Application a=new Application();
}
protected void processWindowEvent(WindowEvent arg0) 
{
if(arg0.getNewState()==WindowEvent.WINDOW_CLOSED)
System.out.println("ok");
}
}
现在这个窗口关不上了！！！

Answer 2

自己给自己分
public void processWindowEvent(WindowEvent e)
{
if(e.getID()==WindowEvent.WINDOW_CLOSING)
{
   this.dispose();//释放资源
   super.processWindowEvent(e);//处理此组件上发生的窗口事件
}
}

Answer 3

public class MainFrame extends JFrame {
public MainFrame() {
this.setSize(400, 400);
this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
this.setVisible(true);
} public void processWindowEvent(WindowEvent e) {
if (e.getID() == WindowEvent.WINDOW_CLOSING) {
System.out.println("关闭！");
}
super.processWindowEvent(e);
} public static void main(String[] arags) {
new MainFrame();
}
}

Answer 4

好像捕捉不到 WINDOW_CLOSED！

Answer 5

乱七八糟的代码一大堆，不就是要实现关闭时附加动作吗！！import java.awt.event.*;
import javax.swing.*;public class Application extends JFrame {
private static final long serialVersionUID = 1L; public Application() {
this.setSize(320, 300);
this.setTitle("QQ用户注册");
this.setVisible(true); this.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent arg0) {
System.out.println("ok");
}
});
} public static void main(String[] args) {
new Application();
}
}正确答案，给分给分！！！！

Answer 6

JFrame jf=new JFrame("");if.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
直接关闭就行了.