Commons Collections 3.2 has been released. Commons Collections is a library that builds upon the Java Collection Framework. It provides additional Map, List and Set implementations and utilities. It also builds on the framework by providing new interfaces and implementations.

This release fixes numerous bugs, and adds a limited number of enhancements, including:

MultiValueMap - a flexible MultiMap implementation DefaultedMap - a map that returns a default value when the key is not found GrowthList - A list where set and add expand the list rather than throw IndexOutOfBoundsException LoopingListIterator - A never-ending list iterator addIgnoreNull - Adds to the collection if the value being added is not null isEmpty - Checks maps and collections for empty or null

The Release notes are available online and in the download.

Downloads are available from http://jakarta.apache.org/site/downloads/downloads_commons-collections.cgi (Note: the binary download includes a source zip for use with IDEs)

Feedback welcomed to the Commons Collections Team.

Find more about it here.

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