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Immutable
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javax.annotation.concurrent</FONT>
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Annotation Type Immutable</H2>
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<DT><PRE><FONT SIZE="-1">@Documented
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@Target(value=TYPE)
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@Retention(value=CLASS)
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</FONT>public @interface <B>Immutable</B></DL>
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Immutable
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The class to which this annotation is applied is immutable. This means that
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its state cannot be seen to change by callers. Of necessity this means that
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all public fields are final, and that all public final reference fields refer
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to other immutable objects, and that methods do not publish references to any
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internal state which is mutable by implementation even if not by design.
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Immutable objects may still have internal mutable state for purposes of
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performance optimization; some state variables may be lazily computed, so
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long as they are computed from immutable state and that callers cannot tell
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the difference.
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Immutable objects are inherently thread-safe; they may be passed between
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threads or published without synchronization.
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