Multithreading and synchronization are a very important topic for any Java programmer. Good knowledge of multithreading, synchronization, and thread-safety can put you in front of other developers, at the same time, it’s not easy to master this concept. In fact writing correct concurrent code is one of the hardest things, even in Java, which has several inbuilt synchronization utilities. In this Java synchronization tutorial we will learn what is meaning of Synchronization in Java, Why do we need Synchronization in Java, What is java synchronized keyword, examples of using Java synchronized method and blocks, What can happen in multithreading code in absence of synchronized constructs, tips to avoid mistakes, while locking critical section in Java and some of important points about synchronization in Java .
Since Java provides different constructs to provide synchronization and locking e.g. volatile keyword , atomic variable, explicitly locking using java.util.concurrent.lock.Lock interface and there popular implementations e.g. ReentrantLock and ReentrantReadWriteLock , It becomes even more important to understand difference between synchronized and other constructs.
Remember, a clear understanding of synchronization is must to write correct concurrent code in Java, which is free of multithreading issues like deadlock, race conditions, and thread-safety. I am sure, things learned in this Java synchronization tutorial will help. Once you went through this article, You can further read Java Concurrency in Practice to develop your concept. That’s the one of that book which every Java developer must read.
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