Java Trainer
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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