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.

Can you explain how locks provide more flexibility?

Sure! Locks allow for more complex thread management, such as trying to acquire a lock without blocking, and can be used with conditions to manage thread communication.

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 over thread access compared to synchronized.

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.