JAVA~多线程：sleep、yield方法

package multiThread2;

public class TestThread042Yield {
public static void main(String[] args) {
MyThread3 t1 = new MyThread3("t1");
MyThread3 t2 = new MyThread3("t2");
MyThread3 t3 = new MyThread3("t3");
t1.setPriority(Thread.MIN_PRIORITY);
t2.setPriority(Thread.NORM_PRIORITY);
t3.setPriority(Thread.MAX_PRIORITY);
t1.start();
t2.start();
t3.start();
}
}

class MyThread3 extends Thread {
MyThread3(String s) {
super(s);
}
public void run() {
for (int i = 1; i <= 100; i++) {
System.out.print("");
if (i % 10 == 0) {
//                try {
//                    sleep(10);
//                } catch (InterruptedException e) {
//                    e.printStackTrace();
//                }
yield();
System.out.println(this.getName() + ":"+ i);
}
}
}
}