What is the usage of ReentrantLock in Java?

What is the usage of ReentrantLock in Java?

ReentrantLock is a synchronization aid that allows threads to lock and unlock resources in a more flexible way than synchronized blocks.

How does it differ from synchronized methods?

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

Can you give an example of how to use 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?

Some advantages include better performance in high contention scenarios, the ability to interrupt threads, and more control over the locking mechanism.