Where can I get the Collections Framework?

The Collections Framework is a core part of the Java 2 platform. You don't have to download anything more than the Java 2 SDK. For more information about the framework, the main documentation is available at http://www.javasoft.com/products/jdk/1.2/docs/guide/collections/.

There also is a subset of the Collections Framework available for JDK 1.1, see http://java.sun.com/beans/infobus/#collections.