线程是否在阻塞时退出每个同步方法或对象？

Question

If I have something like this

synchronized void doSomething() throws Exception {
    synchronized (lock1) {
        lock1.wait();
    }
    wait();
}

Once it blocks at lock1.wait() , will some other thread be able to access doSomething() and do work in it?

What if the blocked thread gets signaled and regains entry to the method? will it block on wait() or not?

Answer 1

No, calling wait() releases the lock on the object that you're calling wait() on only. In the example code the lock on lock1 will be released, but the lock on this is still kept by the thread.