通知唤醒其他线程时，感觉像锁死了一样

Question

这个代码在通知唤醒时怎么感觉像是锁死了
输出语句就一句


public class Test5 {
    public static void main(String[] args) {
        Data2 data = new Data2();
        new Thread(() -> {
            for (int i = 0; i < 10; i++) {
                try {
                    data.printA();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }

        }, "A").start();

        new Thread(() -> {
            for (int i = 0; i < 10; i++) {
                try {
                    data.printB();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }

        }, "B").start();
        new Thread(() -> {
            for (int i = 0; i < 10; i++) {
                try {
                    data.printC();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }

        }, "C").start();
        new Thread(() -> {
            for (int i = 0; i < 10; i++) {
                try {
                    data.printD();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }

        }, "D").start();

    }


}

//判断等待-业务计算-通知
class Data2 {
    private int num=0;
   private  Lock lock=new ReentrantLock();
   private  Condition condition=lock.newCondition();
    private  Condition condition2=lock.newCondition();
    private  Condition condition3=lock.newCondition();
    private  Condition condition4=lock.newCondition();
    public synchronized void printA() throws InterruptedException {
        lock.lock();
        try {
            while (num != 0) {//防止虚假唤醒
                condition.await();//等待
            }
            System.out.println(Thread.currentThread().getName() + "->"+"A" + num);
            num=1;
            condition2.signal();//通知
        }
        finally {
            lock.unlock();
        }

    }
    public synchronized void printB() throws InterruptedException {
        lock.lock();
        try {
            while (num != 1) {
                condition2.await();//等待
            }
            System.out.println(Thread.currentThread().getName() + "->"+"B" + num);
            num=2;
            condition3.notify();//通知
        }

    finally {
            lock.unlock();
        }
        }
    public synchronized void printC() throws InterruptedException {
        lock.lock();
        try {
            while (num != 2) {
                condition3.await();//等待
            }
            System.out.println(Thread.currentThread().getName() + "->"+"C" + num);
            num=3;
            condition4.notify();//通知
        }

        finally {
            lock.unlock();
        }
    }
    public synchronized void printD() throws InterruptedException {
        lock.lock();
        try {
            while (num != 3) {
                condition4.await();//等待
            }
            System.out.println(Thread.currentThread().getName() + "->"+"D" + num);
            num=4;
            condition.notify();//通知
        }

        finally {
            lock.unlock();
        }
    }
}

Answer 1

await改为wait试试