The Java 2 SDK organizes its vast collection of classes and interfaces into a tree-like hierarchy of packages within packages, which is equivalent to directories within directories. That hierarchy ...

A proposal pending in the OpenJDK community would define interfaces for ... them into the existing collections type hierarchy. Motivating the plan are two gaps in Java’s collections framework, ...

The Java Platform ... the concepts behind the Collections Framework and show how easy it is to extend or customize the Framework for specialized applications. The Map interface represents an ...