What are the differences between synchronized and reentrant locks?

Can you explain the differences between synchronized and reentrant locks in Java?

Sure! Synchronized locks are built into Java and are simpler to use, but they can lead to thread contention. Reentrant locks, on the other hand, are more flexible and allow a thread to acquire the same lock multiple times.

What are the advantages of using reentrant locks over synchronized?

Reentrant locks provide more control over locking mechanisms, such as try-lock and timed lock features, which can help avoid deadlocks and improve performance.

Are there any scenarios where I should prefer synchronized over reentrant locks?

Yes, if you need a simple locking mechanism without the overhead of managing lock states, synchronized is often sufficient and easier to implement.

Can you give an example of when to use each?

Certainly! Use synchronized for simple methods where you need quick thread safety. Use reentrant locks in complex scenarios where you need advanced features like interruptible locks.