Articles: Collections

A collection (sometimes called a container) is simply an object that groups multiple elements into a single unit. Collections are used to store, retrieve and manipulate data, and to transmit data from one method to another. Collections typically represent data items that form a natural group, like a poker hand (a collection of cards), a mail folder (a collection of letters), or a telephone directory (a collection of name-to-phone-number mappings).

Utilizing the Map Interface from the Collections Framework by Ming Chou
Explores the Map interface and the different implementations (TreeMap and HashMap) offered as part of the Collections package. (March 2002)

Using Collections with JDK 1.2. by Glen McCluskey — Release JDK 1.2
Presents key features of the Collections framework including algorithms, iterators, and legacy code with many useful code samples. (December 1998)