At the base of the Framework are the interfaces java.util.Collection and java.util.Map. The Collection interface represents just a group of objects, with no particular order or restriction.

Proposal for enhancing the Java programming language would define interfaces for sequenced collections, sequenced sets, and sequenced maps. Topics Spotlight: AI-ready data centers ...

The collections framework was designed to meet several goals. The framework had to be high-performance. The implementations for the fundamental collections (dynamic arrays, linked lists, trees, and ...

When Java was born, the only data structure support built into the core libraries involved arrays, vectors (essentially dynamically-sized arrays), and hash tables (for key-value pairs).