Java 等待直到在另一个线程中获取锁

我试图在获得锁的同时解决并发问题，代码如下所示：

真正的锁是在线程启动时获得的，这已经太晚了

acquireLockAndRunOnNewThread(() -> {
    acquiredLock=true;
    continueWithOtherStuff();
}

//do not continue until the lock is acquired
while(acquiredLock==false){
    Thread.sleep(100); 
}
continueWithOtherStuffThatAlsoAcquiresALockAtSomePointInTime()

如何在没有线程的情况下正确解决此问题。睡眠？

使用：

然后：

使用：

然后：

CountDownLatch latch = new CountDownLatch(1);

acquireLockAndRunOnNewThread(() -> {
    latch.countDown();
    continueWithOtherStuff();
}

//do not continue until the latch has counted down to zero.
latch.await();
continueWithOtherStuffThatAlsoAcquiresALockAtSomePointInTime()