import java.util.concurrent.locks.LockSupport;

/**

* 编写一个程序，开启三个线程，这三个线程的 ID 分别是 A、B 和 C，每个线程把自己的 ID 在屏幕上打印 10 遍，

* 要求输出结果必须按 ABC 的顺序显示，如 ABCABCABC... 依次递推。

*

*/

public class AbcLockSupport {

static Thread threadA,threadB,threadC;

public static void main(String[] args) {

threadA = new Thread(() -> {

while (true) {

System.out.print(Thread.currentThread().getName());

// 唤醒B

LockSupport.unpark(threadB);

// 阻塞A

LockSupport.park();

}

} ,"A");

threadB = new Thread(() -> {

while (true) {

// 阻塞B

LockSupport.park();

System.out.print(Thread.currentThread().getName());

// 唤醒C

LockSupport.unpark(threadC);

}

} ,"B");

threadC = new Thread(() -> {

while (true) {

// 阻塞C

LockSupport.park();

System.out.println(Thread.currentThread().getName());

// 唤醒A

LockSupport.unpark(threadA);

}

} ,"C");

threadA.start();

threadB.start();

threadC.start();

}

}