Java News from Wednesday, June 30, 2004

The Apache Jakarta Project has released Commons Collections 3.1, an open source library that extends and augments the Java Collections Framework. It includes:

Version 3.1 is mostly backwards compatible with 3.0. It adds a number of new classes including TreeList, MultiKeyMap, SingletonMap, ObjectGraphIterator, MapBackedSet, ReferenceIdentityMap, AbstractReferenceMap, EmptyIterator, TransformedPredicate, PredicateDecorator, and AbstractSerializableDecorator. A number of other classes are now Serializable, and various methods have been added to existing classes. And of course bugs have been fixed.