| Package | Description | 
|---|---|
| java.util.concurrent.atomic | A small toolkit of classes that support lock-free thread-safe
 programming on single variables. | 
| Class and Description | 
|---|
| AtomicIntegerFieldUpdater A reflection-based utility that enables atomic updates to
 designated  volatile intfields of designated classes. | 
| AtomicLongFieldUpdater A reflection-based utility that enables atomic updates to
 designated  volatile longfields of designated classes. | 
| AtomicReferenceFieldUpdater A reflection-based utility that enables atomic updates to
 designated  volatilereference fields of designated
 classes. | 
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