What is a ReentrantLock in Java and how does it work?

What is a ReentrantLock in Java and how does it work?

A ReentrantLock is a synchronization aid that allows threads to lock and unlock resources in a flexible way. It is part of the java.util.concurrent package.

How is it different from synchronized blocks?

Unlike synchronized blocks, ReentrantLock provides more features like tryLock, timed lock, and the ability to interrupt threads waiting for a lock.

Can you give me an example of using ReentrantLock?

Sure! Here's a simple example:

ReentrantLock lock = new ReentrantLock();

lock.lock();
try {
    // critical section code
} finally {
    lock.unlock();
}

What are the advantages of using ReentrantLock?

The advantages include better control over locking, the ability to try locking without blocking, and the option to interrupt thread waiting.