Primitive wrapper class in Java: Difference between revisions

Revision as of 15:32, 12 October 2007

Revision as of 23:45, 21 March 2008

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With Java 5.0, additional wrapper classes were introduced in the {{Javadoc:SE|package=java.util.concurrent.atomic|java/util/concurrent/atomic}} package. These classes are mutable and cannot be used as a replacement for the regular wrapper classes. Instead, they provide [[atomic operation]]s for addition, increment and assignment.

The atomic wrapper classes and their corresponding primitive types are:

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The <code>AtomicInteger</code> and <code>AtomicLong</code> classes are subclasses of the <code>Number</code> class. The <code>AtomicReference</code> class accepts the [[TypeParameter|type parameter]] <code>V</code> that specifies the type of the object [[reference (computer science)|reference]]. (See "[[Generics in Java]]" for a description of type parameters in Java.) Note that while an object type is not a primitive type, an object reference is.

== See also ==