//Car.javaimport java.awt.*;import java.awt.event.*;import javax.swing.*;public class Car extends JApplet implements Runnable{  private Image spin;  private int currentLocation;  private Thread spirit;  public Car() {  }  //applet初始化  public void init() {    currentLocation=0;    spin=getImage(getDocumentBase(),"image/car.gif");  }  public void start(){    spirit=new Thread(this);    spirit.start();  }  public void  paint(Graphics g){    g.drawImage(spin,currentLocation,30,this);//在當前位置處繪制圖片    currentLocation=(currentLocation+3)%400;//另圖片在顯示區域中不斷顯示  }  public void stop(){    spirit=null;  }  public void run(){    while(spirit!=null)   {     repaint();     try{      spirit.sleep(200);//線程休眠200毫秒，即另圖片在當前位置停留200毫秒      } catch(InterruptedException e)       {  e.printStackTrace() ;  }   }  }}