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.

Java Collection Framework Hierarchy. As we have learned Java collection framework includes interfaces and classes. Now, let us see the Java collections framework hierarchy. In the above image, blue part refers to the different interfaces and the yellow pa

How to Sort ArrayList in Java. In Java, Collection is a framework that provides interfaces (Set, List, Queue, etc.) and classes (ArrayList, LinkedList, etc.) to store the group of objects.