public class ThreadYield extends Thread {

    @Override

    public void run() {

        for (int x = ; x < ; x++) {

            System.out.println(getName() + ":" + x);

            Thread.yield();//你一次我一次的执行 只是一定程度上

        }

    }

}

public class ThreadYieldDemo {

    public static void main(String[] args) {

        ThreadYield ty1 = new ThreadYield();

        ThreadYield ty2 = new ThreadYield();

        ty1.setName("林青霞");

        ty2.setName("刘意");

        ty1.start();

        ty2.start();

    }

}