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| to other immutable objects, and that methods do not publish references to any |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