The Google Collections Library 1.0 is a set of new collection types, implementations and related goodness for Java 5 and higher, brought to you by Google. It is a natural extension of the Java Collections Framework.
We have finally (Dec 30, 2009) released version 1.0-final! The API is now frozen: there will be no more source- or binary-incompatible changes, except those that can be performed via a minimum 18-month-long deprecation window.
