demo.java

没什么用的程序,希望大家喜欢 我是编程菜鸟哦,

import javax.swing.*;
public class Demo 
{
	public static final int width=300;
	public static final int height=200;
	public static void main(String[] args)
	{
		JFrame myWindow=new JFrame();
		myWindow.setSize(width,height);
		JLabel myLabel=new JLabel("Hello!");
		myWindow.getContentPane().add(myLabel);
		WindowDestroyer myListener=new WindowDestroyer();
		myWindow.addWindowListener(myListener);
		myWindow.setVisible(true);
	}
}