Course Content

Course Content


Collections hierarchy is an important concept in Java. Collections hierarchy defines the order of collections and determines which collection is more specific than another.

There are four types of collections:

  • ArrayList
  • LinkedList
  • HashMap
  • TreeMap

In Java, a collection is a framework that provides an architecture for storing and manipulating a collection of objects. Java Collections are capable of doing any data operations such as searching, sorting, insertion, manipulation, and deletion.

A collection, often known as a container, is a simple object that brings together several elements into a single entity. Aggregate data is stored, retrieved, manipulated, and communicated via collections.

Collections in Java are a key feature of the language. They provide a way for developers to organize and store data. Collections in Java come with a set of core features like iteration, sorting and filtering.

Recommended Courses

Share With Friend

Have a friend to whom you would want to share this course?

Download LearnVern App

App Preview Image
App QR Code Image
Code Scan or Download the app
Google Play Store
Apple App Store
598K+ Downloads
App Download Section Circle 1
4.57 Avg. Ratings
App Download Section Circle 2
15K+ Reviews
App Download Section Circle 3
  • Learn anywhere on the go
  • Get regular updates about your enrolled or new courses
  • Share content with your friends
  • Evaluate your progress through practice tests
  • No internet connection needed
  • Enroll for the webinar and join at the time of the webinar from anywhere