public class MyThread implements Runnable {

    int i = 0;

    @Override
    public void run() {

        while (true) {
            synchronized (this) {
                // TODO Auto-generated method stub
                System.out.println(Thread.currentThread().getName() + " " + i);

                
 
if (i++ > 50) {
                    break;
                }

                Thread.yield();

                try {
                    Thread.sleep(10);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
    }
}
 

public class Test {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        MyThread myThread = new MyThread();

        Thread thread1 = new Thread(myThread);
        thread1.setPriority(Thread.MAX_PRIORITY);
        thread1.setName("thread1");
        thread1.start();

        Thread thread2 
 
= new Thread(myThread);
        thread2.setPriority(Thread.MAX_PRIORITY);
        thread2.setName("thread2");
        thread2.start();
    }

}

執行結果

thread1 0
thread1 1
thread1 2
thread1 3
thread1 4
thread1 5
thread1 6
thread1 7
thread2 8
thread2 9
thread1 10
thread1 11
thread1 12