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Commons Collections

Wiki Markup\[http://jakarta.apache.org/commons/collections Collections\] aims to provide:

  • New implementations of the JDK Collection, Set, List and Map interfaces
  • Additional related collection interfaces and implementations
  • Abstract base classes to simplify the writing of new implementations
  • A testing framework, as a published jar, that excercises the API fully

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The Javadoc of the latest version is \[http://jakarta.apache.org/commons/collections/api-release/index.html available\].

Wiki Markup\["Collections Questions"\]Collections_Questions

Releases & Compatability

Wiki MarkupThe latest release (v3.2) can be downloaded \[http://jakarta.apache.org/commons/collections/index.html#Releases here\].

Two releases of Collections are currently in common use - v2.x and v3.x. These releases are source compatible (with deprecations). Unfortunately, due to human error, these releases are binary incompatible in the IteratorUtils class. If you don't use this class, then the two versions are binary compatible.

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  • A 3.3 release is on the horizon, primarily to get OSGi support into an official release.
  • Wiki Markup
    Thoughts about future releases on the 3.x line are being collected at \[wiki:/Collections3x Collections3x\].
  • Tentative plans are for a 4.0 release immediately on the heels of 3.3, identical in features except with deprecated classes removed.
  • Work is progressing on a version of collections that is primarily aimed at using the Java 1.5 generics feature. This will not be based on the work already done at Wiki MarkupWork is progressing on a version of collections that is primarily aimed at using the Java 1.5 generics feature. This will not be based on the work already done at collections.sf.net for reasons outlined in \[wiki:/GenericCollections Generic Collections\]. \\

Feedback

Wiki Markup
You can give feedback on what you would like included in future releases by contacting the commons-dev@jakarta.apache.org mailing list, prefixing you email by \[collections\]. Alternatively add a comment here:

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