example10_3.java.bak

不错的教程 适合中高级人员的使用

import java.applet.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;

class MyButton1 extends Button implements ActionListener
{
	int n=1;
	MyButton1()
	{ setSize(25,160);addActionListener(this);}
	public void paint(Graphics g)
	{
		g.drawString("我",6,14);g.drawString("是",6,34);
		g.drawString("一",6,54);g.drawString("个",6,74);
		g.drawString("竖",6,94);g.drawString("按",6,114);
		g.drawString("钮",6,134);g.drawString("！",6,154);		
	}
	public void actionPerformed(ActionEvent e)
	{
		n=(n+1)%3;
		if(n==0)
			this.setBackground(Color.cyan);
		if(n==1)
			this.setBackground(Color.orange);
        if(n==2)
			this.setBackground(Color.pink);
	}
}

class MyButton2 extends Button
{
	MyButton2()
	{
		setSize(38,80);setBackground(Color.cyan);
	}
	public void paint(Graphics g)
	{
		g.setColor(Color.red);
		g.fillOval(10,3,20,20);
		g.setColor(Color.yellow);
		g.fillOval(10,28,20,20);
		g.setColor(Color.green);
		g.fillOval(10,53,20,20);
	}
}

public class Example10_3 extends Applet 
{
	

	public void init()
	{
		MyButton1 button1=new MyButton1();
		MyButton2 button2=new MyButton2();
		setLayout(null);
		add(button1);add(button2);
		button1.setLocation(12,12);
		button1.setLocation(60,12);
				
	}
}