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Writing Thread-Safe Programs Using Atomic Variables

Race condition never occurs in a thread-safe program. What is a race condition? When variables are shared by multiple threads, there is a possibility that more than one thread get access to a variable and try to modify its value at the same time. This could lead to a loss of data modification done by a thread and leave the program in an inconsitent state. Such hazards should be avoided by allowing only one thread to access the shared variables when they are being modified. Synchronized methods and synchronized blocks are used to lock an object so that only one thread can access the object’s state and other threads keep waiting for the access until the lock is released.

Topics: Thread-Safe Programs Java SE 5 Java Multithreading Atomic Variables Technology

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