What is alternative to synchronized in Java?
locks package from Java 1.5 introduces a Lock interface defined as an alternative to the synchronized keyword : Lock implementations provide more extensive locking operations than can be obtained using synchronized methods and statements.
What is a sync issue?
The synchronization issues folders contain logs and items that Microsoft Outlook has been unable to synchronize with your email or SharePoint servers. … Scroll to the Sync Issues folder and expand it to also see the Conflicts, Local Failures, and Server Failures folders.
Is ConcurrentLinkedQueue thread safe?
A ConcurrentLinkedQueue is an unbounded, thread-safe, and non-blocking queue. Let's create an empty ConcurrentLinkedQueue: ConcurrentLinkedQueue queue = new ConcurrentLinkedQueue();
Why is ReentrantLock needed?
The thread doesn't need to block infinitely, which was the case with synchronized. … ReentrantLock provides a convenient tryLock() method, which acquires lock only if its available or not held by any other thread. This reduces the blocking of thread waiting for lock-in Java applications.