alertwithimageandthreadmidletthread.java

JAVA自学

import javax.microedition.lcdui.*;
class AlertWithImageAndThreadMIDletThread extends Thread
{
        Alert al ;
        Image originimg ;
        public AlertWithImageAndThreadMIDletThread(Alert al)
        {
                this.al = al  ;
                originimg = al.getImage() ;
        }
        public void run()
        {
                for(int i=0 ; i <11 ; i++)
                {
                        Image img = al.getImage() ;
                        if(img == null)
                        {
                                al.setImage(originimg);
                        }else
                        {
                                al.setImage(null);
                        }
                        try
                        {
                                Thread.sleep(500);
                        }catch(Exception e){}
                }

        }
}