Condition精准的通知和唤醒线程

/*
A执行完调用B,B执行完调用C,C执行完调用A
 */
public class C {
    public static void main(String[] args) {
        Data3 data = new Data3();

        new Thread(()->{
            for (int i = 0; i < 10; i++) {
                data.printA();
            }
        },"A").start();

        new Thread(()->{
            for (int i = 0; i < 10; i++) {
                data.printB();
            }
        },"B").start();

        new Thread(()->{
            for (int i = 0; i < 10; i++) {
                data.printC();
            }
        },"C").start();
    }
}

class Data3{//资源类 lock
    private Lock lock = new ReentrantLock();
    Condition condition1 = lock.newCondition();
    Condition condition2 = lock.newCondition();
    Condition condition3 = lock.newCondition();

    private int number = 1;// 1A 2B 3C

    public void printA() {
        lock.lock();
        try {
            // 业务
            while (number != 1) {
                // 等待
                condition1.await();
            }
            System.out.println(Thread.currentThread().getName() + "-->A");
            // 唤醒 B
            number = 2;
            condition2.signal();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            lock.unlock();
        }
    }

    public void printB() {
        lock.lock();
        try {
            // 业务
            while (number != 2) {
                // 等待
                condition2.await();
            }
            System.out.println(Thread.currentThread().getName() + "-->B");
            // 唤醒 C
            number = 3;
            condition3.signal();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            lock.unlock();
        }
    }

    public void printC() {
        lock.lock();
        try {
            // 业务
            while (number != 3) {
                // 等待
                condition3.await();
            }
            System.out.println(Thread.currentThread().getName() + "-->C");
            // 唤醒 A
            number = 1;
            condition1.signal();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            lock.unlock();
        }
    }

}