appletdemo.java

本java源程序包括了大量的学习程序（共27章）方便大家学习

import java.applet.*;
import java.awt.*;
public class AppletDemo extends Applet
{
	//声明并初始化变量
	private int InitNum = 0;
	private int StartNum = 0;
	private int StopNum = 0;
	private int DestoryNum = 0;
	private int PaintNum = 0;
	//初始化方法init()定义
	public void init()
	{
		InitNum++;
	}
    //主线程开始方法start()定义
	public void start()
	{
		StartNum++;
	}
	//主线程挂起方法stop()定义
	public void stop()
	{
		StopNum++;
	}
	//Applet程序结束访法destory()
	public void destory()
	{
		DestoryNum++;
	}
	//Applet界面绘制方法paint()
	public void paint(Graphics g)
	{
		PaintNum++;
		//使用drawLine()方法画线段
		g.drawLine(20,20,20,200);    //线段坐标从（20，20）至（20，200）
		g.drawLine(20,200,240,200);  //线段坐标从（20，200）至（240，200）
		g.drawLine(60,200,60,200-InitNum*20);
		g.drawLine(100,200,100,200-StartNum*20);
		g.drawLine(140,200,140,200-StopNum*20);
		g.drawLine(180,200,180,200-DestoryNum*20);
		g.drawLine(220,200,220,200-PaintNum*20);
		//使用drawString()方法来在Applet界面上写字符串内容
		g.drawString("InitNum="+InitNum,50,220);
		g.drawString("StartNum="+StartNum,50,240);
		g.drawString("StopNum="+StopNum,50,260);
		g.drawString("DestoryNum="+DestoryNum,50,280);
		g.drawString("PaintNum="+PaintNum,50,300);
	}
}