What is the difference between synchronized and ReentrantLock in Java?

What is the difference between synchronized and ReentrantLock in Java?

The main difference is that synchronized is a keyword in Java, while ReentrantLock is a class. Synchronized is simpler but less flexible.

Can you explain the advantages of using ReentrantLock?

ReentrantLock offers more features like tryLock, timed lock, and the ability to interrupt a thread waiting for a lock.

Are there any performance differences between the two?

Yes, ReentrantLock can provide better performance in highly contended situations due to its advanced features.

When should I use synchronized instead of ReentrantLock?

Use synchronized for simpler cases where you don't need the advanced features of ReentrantLock, as it's easier to read and maintain.

Can you give an example of when to use each?

Sure! Use synchronized for simple methods, and ReentrantLock for complex scenarios requiring more control over locking.