Java 8-ReentrantLock/锁定对象

Question

我想知道使用ReentrantLock是否是我的问题的解决方案；我正在尝试“锁定”(防止其他线程访问/使用它)一个对象，直到某个操作完成，然后解锁它以便其他线程可以访问它。我想使用sun的不安全的#monitorEnter/exit，但这可能会导致死锁。

想象一下下面的情况：

public void doSomething() {
    Object object = someObject;

    // Object should be locked until operation is complete.
    doSomethingElse(object);

    // Object should now be unlocked so other threads can use/access it.
}

public void doSomethingElse(Object object) {
    // Something happens to the object here
}

这就是解决方案吗？

  ReentrantLock reentrantLock = new ReentrantLock();

  public void doSomething() {
        Object object = someObject;

        // Object should be locked until operation is complete.
        reentrantLock.lock();
        doSomethingElse(object);

        reentrantLock.unlock();

        // Unlock object for other threads after complete.
    }

    public void doSomethingElse(Object object) {
        // Something happens to the object here
    }

提前谢谢。