What are the differences between locks and synchronized in Java?

What are the differences between locks and synchronized in Java?

In Java, 'synchronized' is a keyword that restricts access to a method or block to one thread at a time, while 'locks' are more flexible and can be used to control access to shared resources with more options.

Can you explain how locks provide more flexibility?

Sure! Locks allow for features like try-lock, which lets a thread attempt to acquire a lock without blocking indefinitely, and they can also be used for multiple conditions.

Are there any performance differences between using locks and synchronized?

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

When should I use synchronized instead of locks?

Use synchronized for simpler cases where you need quick thread safety without the overhead of managing locks. It's easier to implement and understand.