closedjframe.java

初学的好东西值得一看看欢迎下载观看使用

import javax.swing.JFrame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
class ClosedWin extends WindowAdapter{
	public void windowClosing(WindowEvent e){
		System.out.println("The Window will be closed,please save your data.");
		System.exit(0);
	}
}

class ClosedJFrame extends JFrame{
	ClosedJFrame(){
		super("关闭窗口示例");
		setSize(300,150);
		ClosedWin cwin=new ClosedWin();
		addWindowListener(cwin);
		setVisible(true);
	}
	public static void main(String[] args){
		ClosedJFrame cjf=new ClosedJFrame();
	}
}