我需要等待监听器将布尔值从null更改为false/true java

import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class BooleanListener {
    private boolean value = false;
    private Lock lock = new ReentrantLock();
    private Condition condition = lock.newCondition();

    public void waitForValue(boolean expectedValue) throws InterruptedException {
        lock.lock();
        try {
            while (value != expectedValue) {
                condition.await();
            }
        } finally {
            lock.unlock();
        }
    }

    public void setValue(boolean newValue) {
        lock.lock();
        try {
            value = newValue;
            condition.signalAll();
        } finally {
            lock.unlock();
        }
    }
}