Atomic Types

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Java Atomic Types are simple mutable types that provide basic operations that are thread-safe and atomic without resorting to locking. They are intended for use in cases where locking would be a concurrency bottleneck, or where there is risk of deadlock or livelock.


Parameter | Description | — | — | set | Volatile set of the field | get | Volatile read of the field | lazySet | This is a store ordered operation of the field | compareAndSet | If the value is the expeed value then sent it to the new value | getAndSet | get the current value and update |


Many on essentially combinations of volatile reads or writes and CAS operations. Best way to understand this is to look at the source code directly. E.g. AtomicInteger, Unsafe.getAndSet

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