What are the differences between synchronized and locks in Java?

What are the differences between synchronized and locks in Java?

Synchronized is a keyword in Java that allows you to control access to a block of code or an object. Locks, on the other hand, are part of the java.util.concurrent package and provide more flexibility and features.

Can you explain how synchronized works?

Sure! When a method or block is marked as synchronized, only one thread can execute it at a time for the object it's synchronized on. This prevents thread interference.

What are the advantages of using locks over synchronized?

Locks offer more advanced features like tryLock, which allows a thread to attempt to acquire a lock without blocking, and the ability to interrupt threads waiting for a lock.

Are there any performance differences between them?

Yes, locks can be more performant in scenarios with high contention, as they allow for more granular control and can reduce the overhead associated with synchronized blocks.