sleeptest.java

实例精华

package untitled1;

public class SleepTest
{
    public static void main(String[] args)
    {
        Testa t = new Testa();
        Thread th1 = new Thread(t);
        Thread th2 = new Thread(t);
        System.out.println(th1.isAlive());
        th1.start();
        th2.start();
    }
}

class Testa implements Runnable
{
    int count = 50;
    public void run(){
        for(;;)
        {
            if(count%2 == 0 && count>0)
            {
                try {
                    Thread.sleep(500);
                } catch (InterruptedException ex) {
                    ex.printStackTrace();
                }
            }
            else if(count==0)
            {
                break;
            }
            System.out.println(Thread.currentThread().getName()+"  "+count--);
        }
    }

}