What are the best practices for locking in Java?

What are the best practices for locking in Java?

In Java, best practices for locking include using synchronized blocks, avoiding unnecessary locks, and using ReentrantLock for more flexibility.

Can you explain why avoiding unnecessary locks is important?

Avoiding unnecessary locks is crucial because it reduces contention, improves performance, and minimizes the risk of deadlocks.

What is a ReentrantLock and how does it differ from synchronized?

A ReentrantLock is a more advanced locking mechanism that allows for features like try-lock and timed lock, unlike synchronized which is simpler but less flexible.

Are there any specific scenarios where I should prefer ReentrantLock?

Yes, prefer ReentrantLock when you need advanced features like interruptible locks or when you want to implement a fair locking policy.