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Atomic Access (The Java™ Tutorials > Essential Java Classes > Concurrency)

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The Java Tutorials have been written for JDK 8. Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available. See Java Language Changes for a summary of updated language features in Java SE 9 and subsequent releases. See JDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases. In programming, an atomic action is one that effectively happens all at once. An atomic action cannot stop in the middle: it either happens completely, or it doesn't happen at all. No side effects of an atomic action are visible until the action is complete. We have already seen that an increment expression, such as c++, does not describe an atomic action. Even very simple expressions can define complex actions that can decompose into other actions. However, there are actions you can specify that are atomic: Atomic actions cannot be interleaved, so they

Atomic Access (The Java™ Tutorials > Essential Java Classes > Concurrency) Documentation The Java™ Tutorials External Link --> Hide TOC Concurrency Processes and Threads Thread Objects Defining and Starting a Thread Pausing Execution with Sleep Interrupts Joins The SimpleThreads Example Synchronization Thread Interference Memory Consistency Errors Synchronized Methods Intrinsic Locks and Synchronization Atomic Access Liveness Deadlock Starvation and Livelock Guarded Blocks Immutable Objects A Synchronized Class Example A Strategy for Defining Immutable Objects High Level Concurrenc

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