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Java Trainer Interview Questions and Answers

Updated 18 Sep 2021

Q1. Collection in java

Ans.

Collection is a framework that provides an architecture to store and manipulate a group of objects.

  • Collection is an interface that extends Iterable interface

  • List, Set, and Queue are the main subinterfaces of Collection

  • ArrayList, LinkedList, HashSet, TreeSet, PriorityQueue are some of the implementations of Collection

  • Collection provides methods like add(), remove(), contains(), size(), etc.

  • Collections is a utility class that provides methods like sort(), reverse(), shuffle(), ...read more

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