car.java

来自「打包一些Java学习课件及附带的源代码」· Java 代码 · 共 40 行

//Car.java
import 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);//在当前位置处绘制图片
    currentLocation=(currentLocation+3)%400;//另图片在显示区域中不断显示
  }
  public void stop(){
    spirit=null;
  }
  public void run(){
    while(spirit!=null)
   {
     repaint();
     try{
      spirit.sleep(200);//线程休眠200毫秒，即另图片在当前位置停留200毫秒
      } catch(InterruptedException e)
       {  e.printStackTrace() ;  }
   }
  }
}