What are synchronized blocks in Java?

What are synchronized blocks in Java?

Synchronized blocks in Java are used to control access to a block of code by multiple threads, ensuring that only one thread can execute it at a time.

How do I implement a synchronized block?

You can implement a synchronized block using the synchronized keyword followed by an object to lock. For example: synchronized(this) { // code }.

What happens if a thread tries to enter a synchronized block that is already locked?

If a thread tries to enter a synchronized block that is already locked by another thread, it will be blocked until the lock is released.

Can synchronized blocks lead to deadlocks?

Yes, if multiple threads are waiting for each other to release locks, it can lead to a deadlock situation.