Java中的AutoLock - 如何？

Question

离开范围时,释放资源的最佳方法是什么(在这种情况下解锁ReadWriteLock)？如何涵盖所有可能的方式(退货,休息,例外等)？

Answer 1

try/finally块是最接近这种行为的东西:

Lock l = new Lock();
l.lock();  // Call the lock before calling try.
try {
    // Do some processing.
    // All code must go in here including break, return etc.
    return something;
} finally {
    l.unlock();
}