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In Java, Collections is a framework that gives architecture for storage and the manipulation of groups of objects. Collection basically represents a single unit of objects like a group. All operations that can be performed on a data like searching, insertion, sorting, manipulation, deletion and more can be done by Java Collections. Java Collection framework provides developers with several interfaces – List, Set, Queue, Deque etc. and classes like Vector, Arraylist, Hashset, Treeset, LinkedList, PriorityQueue etc.

Frameworks in Java help with providing readymade architecture. They represent a set of interface and classes. Framework in Java has the optional feature. A collection framework uses algorithms and has interfaces along with implementations.

What collection framework was meant to do?

  1. Frameworks had to be high performance. The implementations for fundamental collections – linked lists, hashtables, trees and dynamic arrays had to become efficient.
  2. The framework needed to extend and adapt to any collection easily.
  3. The framework had to allow all kinds of collections to work in the same manner and with a good degree of interoperability.


Java 8 students get to work on this during the course.

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