-To chack for updates to this draft, access a preliminary prototype -release of main functionality, or join a mailing list discussing this -JSR, go to: -http://altair.cs.oswego.edu/mailman/listinfo/concurrency-interest -. -
- - Disclaimer. The prototype implementation is experimental -code developed as part of JCP JSR-166 is made available to the -developer community for use as-is. It is not a supported product. Use -it at your own risk. The specification, language and implementation -are subject to change as a result of your feedback. Because these -features have not yet been approved for addition to the Java language, -there is no schedule for their inclusion in a product. - -
Disclaimer. This draft specification was produced -using JDK1.4 tools plus some preprocessing. The resulting javadocs do -not yet correctly render other planned JDK1.5 constructs on which -JSR-166 relies, most notably the use of generic types. We are -releasing this version now (before the availability of JDK1.5-based -tools) because, even though they are misformatted and sometimes lack -proper cross-referencing, they otherwise convey the intended -specifications. +http://altair.cs.oswego.edu/mailman/listinfo/concurrency-interest. -
JSR-166 introduces package java.util.concurrent +
Note: The javadocs here do not include pre-existing +java classes (for example java.lang.Thread) that were changed +as part of the JSR166 spec. On the other hand, the javadocs here do +include some existing java.util Collection interfaces and classes that +are not part of the spec, but are included because some new methods +implement or inherit from their specifications. + + +
JSR-166 introduces package java.util.concurrent containing utility classes commonly useful in concurrent programming. Like package java.util, it includes a few small -standardized extensible frameworks, as well as some classes that +standardized extensible frameworks, as well as other classes that provide useful functionality and are otherwise tedious or difficult to implement. -
JSR-166 focusses on breadth, providing critical functionality +
JSR-166 focuses on breadth, providing critical functionality useful across a wide range of concurrent programming styles and applications, ranging from low-level atomic operations, to customizable locks and synchronization aids, to various concurrent @@ -50,8 +38,8 @@ pools. This diversity reflects the range of contexts in which developers of concurrent programs have been found to require or desire support not previously available in J2SE, which also keeping the -resulting package small; providing only that minimial support for -which it makes sense to standardize. +resulting package small; providing only functionality that has been +found to be worthwhile to standardize.
Descriptions and brief motivations for the main components may be found in the associated package documentation. JSR-166 also includes @@ -68,20 +56,28 @@