Java provides HashSet and TreeSet implementations. For maps, you have the choice between HashMap and TreeMap implementations. A LinkedHashMap retains insertion order.

Because of their object-oriented design, the Java classes in the Collections Framework encapsulate both the data structures and the algorithms associated with these abstractions. The framework ...

The Java Platform provides the most commonly used data structures in the form of the Collections Framework, and it provides a rich API to operate on them. This article explains the concepts behind ...