What is Deadlock in #Java ?

A deadlock is a situation where two or more threads are blocked, waiting for each other to release a resource, and are unable to make progress. This can occur when each thread holds a resource that the other thread is trying to acquire. For example, if thread A holds a lock on object X and is waiting for a lock on object Y, and thread B holds a lock on object Y and is waiting for a lock on object X, then a deadlock will occur. Deadlocks can cause a program to hang, and they can be difficult to detect and resolve.

– To prevent deadlocks in Java, it is important to follow some best practices:

– Avoid acquiring locks in a different order in different parts of the code.

– Use try-finally blocks to release locks when you are done with them.

– Use lock timeouts to break the deadlock if it occurs.

– Avoid nested locks, as they can lead to deadlocks.

– Use a lock hierarchy to ensure that locks are always acquired in a consistent order.