page_title: Java collections framework
hierarchical_section_title: Java collections framework
context_page_description: The Java collections framework is a set of classes and interfaces that implement commonly reusable collection data structures.
  Although referred to as a framework, it works in a manner of a library. The collections framework provides both interfaces that define various collections and classes that implement them.
context_section_description: The Java collections framework is a set of classes and interfaces that implement commonly reusable collection data structures.
  Although referred to as a framework, it works in a manner of a library. The collections framework provides both interfaces that define various collections and classes that implement them.
caption: java.util.Collection class and interface hierarchy