Java Collections Framework : Quick Reference

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A collections framework is a unified architecture for representing and manipulating collections. It has:
Interfaces: abstract data types representing collections
Implementations: concrete implementations of the collection interfaces
Algorithms: methods that perform useful computations, such as searching and sorting
These algorithms are said to be polymorphic: the same method can be used on different implementations. A collection is a container object that represents a group of objects, often referred to as elements. The Java Collections Framework supports three types of collections, named sets, lists, and maps.  more...