Now assume that Thread-A which is executing Method-A wants to acquire the lock on Object-B however Thread-B already acquires the lock on Object-B.įurthermore, Thread-B also wants to acquire the lock on Object-A, however, Thread-A has a lock on Object-A. Let’s assume that Thread-A has acquired the lock of Object-A and Thread-B has acquired the lock of Object-B. Suppose there are two threads ‘Thread-A’ and ‘Thread-B’. However, there is a problem with synchronization. Synchronization is good to prevent data inconsistency issues. If another thread has already acquired the lock then this thread has to wait until another thread releases the lock. When a thread wants to execute a synchronized method it first tries to acquire the lock.
In java, each object has a lock, and synchronization is a way to lock a method or code block so that at a time only one thread can access that method/block.
JAVA DEADLOCK HOW TO
In the last tutorial, we have discussed race conditions and how to avoid race conditions using synchronization.Īs we discussed we can use the synchronized method and block to lock a portion of the code. – ExecutorService with a few examples What is Deadlock in Java – Best practice to avoid the deadlock in java.Ī few more Multithreading Articles on Codedelay – How to detect a deadlock using an example. We will also take a look at ways to detect and avoid deadlock in Java using a few examples.
This guide will help you understand the deadlock concept in Java.
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