Identifying Atomic Operations in Java
In Java, an atomic operation is indivisible and guaranteed to complete without interruption from other threads. This provides strong consistency guarantees, which are crucial for ensuring data integrity in multithreaded applications.
Types of Atomic Operations
According to the official Java documentation, the following operations are considered atomic:
Additional Atomic Operations
Limitations of Atomicity
64-bit Primitives (long and double):
While these operations are generally considered atomic on most CPUs, there may be architectures where this is not guaranteed.
Visibility:
Atomic operations do not imply visibility. Although a thread will not see a partially written primitive variable, it may not immediately observe the new value.
Conclusion:
Understanding atomic operations in Java is essential for building thread-safe and reliable applications. By employing these operations judiciously, developers can ensure that data modifications are always complete and consistent.
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