GUI演示

import java.awt.*;
import java.awt.event.*;

class  FrameDemo
{
	private Frame f;
	private Button button;

	FrameDemo()
	{
		init();
	}
	public void init()
	{
		f = new Frame("FrameDemo");
		//对Frame进行基本设置
		f.setBounds(200,100,500,400);
		f.setLayout(new FlowLayout());

		button = new Button("Button");

		//将组件添加到frame中
		f.add(button);
		//加载一个窗体事件
		myEvent();
		//显示窗体
		f.setVisible(true);

	}
	public void myEvent()
	{
		f.addWindowListener(new WindowAdapter()
		{				//匿名内部类
			public void windowClosing(WindowEvent e)
			{
				System.exit(0);
			}
		});
		
		/*
		按钮具备退出程序*/
		button.addActionListener(new ActionListener()
		{
			public void actionPerformed(ActionEvent e)
			{
				System.out.println("退出了");
				System.exit(0);
			}
		});
	}
	public static void main(String[] args) 
	{
		new FrameDemo();
	}
}