public class SubThread extends Thread{
        int u1,v1;
        int result=0;
        //構(gòu)造方法
        public SubThread(String name){
            super(name);
            //隨機(jī)產(chǎn)生0~100以內(nèi)的整數(shù)
            u1=(int)(Math.random()*100);
            v1=(int)(Math.random()*100);
        }
        @Override
        public void run() {
            //如果沒有最大公約數(shù)，就進(jìn)行計算
            if (result==0){
                result=this.getMaxCommonDivisor();
                System.out.println ("運(yùn)行····"+this);
                while (true){
                    Thread.yield ();  //暫停當(dāng)前線程，執(zhí)行其他線程
                }
            }
        }
        //得到最大公約數(shù)
        public int getMaxCommonDivisor() {
            int u=u1,v=v1,r=u;
            while (r!=0){
                u=v;
                v=r;
                r=u%v;
            }
        return v;
        }
        @Override
        public String toString() {
            String msg;
            msg="threadName:"+this.getName ()+", ahead(優(yōu)先級)："+getPriority ();
            String msg1=this.isDaemon ()?"，守護(hù)線程:" :"用戶線程";
            msg=msg+msg1+".["+u1+","+v1+"的最大公約數(shù)是"+result+"]";
            return msg;
        }
    }