What are Java locks and how do they work?

What are Java locks and how do they work?

Java locks are synchronization mechanisms that control access to shared resources in concurrent programming. They help prevent thread interference and ensure data consistency.

Can you explain the different types of locks in Java?

Sure! The main types of locks in Java include intrinsic locks (or monitor locks), explicit locks (like ReentrantLock), and read/write locks. Each serves different purposes in managing thread access.

What is the difference between intrinsic locks and explicit locks?

Intrinsic locks are built into Java's synchronized methods and blocks, while explicit locks, like ReentrantLock, provide more flexibility and features, such as try-lock and timed lock.

When should I use a ReentrantLock instead of synchronized?

You should use ReentrantLock when you need advanced features like fairness policies, the ability to interrupt threads waiting for a lock, or when you want to try acquiring a lock without blocking.