If I need atomic access to an int field inside an object, is it sufficient to declare the field as an AtomicInteger or do I need to use an AtomicIntegerFieldUpdater? (and why?)
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If I need atomic access to an int field inside an object, is it sufficient to declare the field as an AtomicInteger or do I need to use an AtomicIntegerFieldUpdater? (and why?)
Using an
AtomicIntegeris sufficient. Atomic updaters are for use withvolatilefields; the primary use case is data structures which have large numbers of fields that require atomic access; you use the field updater to use those fields with atomic semantics without having anAtomicIntegerreference for each field.For a detailed discussion, see this link.