J2ME手机游戏：运行实现Runnable接口

    另一种线程调用方法是示例6-12中使用Runnable接口设计线程动作，该方法可以由程序直接调用线程内容，它本身要有run()方法。 每个run()也都是一个线程的起始点，必须要由start()启动线程。相关程序代码调用和运行方法为：    
    class PrimeRun implements Runable{
      long minPrime;
    PrimeRun(long minPrime){
    This.minPrime=minPrime;
    }
    public void run(){
    …
    }
    }

    本段为基本的线程编写方法。程序代码本身不会运行这段内容，需要调用下列方法才可以执行线程。
    PrimeRun p = new PrimeRun (143);
    new Thread(p).start();

    示例6-12
    /×
      Runnable类运行线程方法
    ×/
    import javax.microedition.midlet.×;
    import javax.microedition.lcdui.×;
    import java.util.×;
    public class threadDemo2 extends MIDlet
    {
       Display display;
       canvasThread canvasthread;
       public threadDemo2()
       {
          canvasthread=new canvasThread();
          display=Display.getDisplay(this);
       }
       public void startApp()
       {
          display.setCurrent(canvasthread);
       }
       public void pauseApp(){}
       public void destroyApp(boolean unconditional){}
       public class canvasThread extends Canvas
       {
          int  gameaction=0;
          int  view=0;
          goCanvas gocanvas;
          Thread   t;
          Image[]  cloudImage;
          Image[]  sunImage;
          public canvasThread()
          {
            try{
                cloudImage = new Image[]{
                    Image.createImage("/cloud-1.png"),

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【责编:Chuan】

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