walkingman.java

主要是对于JAVA的编程的基本语言 希望能够帮得上你。

package applet;

import java.applet.Applet;
import java.awt.Button;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Date;

public class WalkingMan extends Applet implements Runnable, ActionListener{	
	private Thread thread;	//声明线程
	boolean m_bRunning;	//线程是否启动	
	Image[] images; //声明图像数组
	String[] messages;  //声明消息数组  
	int index; //数组下标
	
	Button btnStart,btnStop,btnExit; //声明三个按钮
	
	public void init(){	
		
		//创建对象
		btnStart=new Button("开始"); 
		btnStop=new Button("停止");	
		btnExit=new Button("退出");
		images=new Image[35];
		messages=new String[35];	
		
		//设置窗口属性
		this.setSize(200,250);	
		
		//添加按钮
		this.add(btnStart);
		this.add(btnStop);
		this.add(btnExit);
		
		//添加事件监听器
		btnStart.addActionListener(this);
		btnStop.addActionListener(this);		
		btnExit.addActionListener(this);		
		
		//加载图像文件
		for(int i=0;i<images.length;i++){
			images[i]=this.getImage(this.getCodeBase(),"story/"+(i+1)+".jpg");
		}
		
		//给消息数组赋值
		for(int i=0; i<messages.length;i++){
			messages[i]="第 "+(i+1)+" 张图片";
		}
		
	}	
	
	public void update(Graphics g){
		paint(g); 
	}
	
	public void paint(Graphics g){
		Image offImage=this.createImage(this.getWidth(), this.getHeight());
		Graphics offGraphics=offImage.getGraphics();
		offGraphics.drawImage(images[index],30,30,this);		
		offGraphics.drawString(messages[index], 80, 200);
		offGraphics.drawString(new Date().toLocaleString(), 60, 220);
		
		g.drawImage(offImage,0,0,this);
	}
	
	public void start() {				
		thread=new Thread(this);  //创建线程
		thread.start();  //启动线程		
    }
	
    public void stop() {
        thread=null;        
    }

    public void run() {        
        while (m_bRunning) {
        	try {
				Thread.sleep(300);
			} catch (InterruptedException e) {				
				e.printStackTrace();
			}  
			if(index<6){
				index++;
			}else{
				index=0;
			}        	
            repaint(); //重绘                     
        }
    }

	public void actionPerformed(ActionEvent e) {
		if(e.getSource()==btnStart){
			m_bRunning=true;			
			start();			
		}else if(e.getSource()==btnStop){
			m_bRunning=false;			
			stop();
		}else
			System.exit(0);		
	}
}