JUnit Tutorial

JUnit Tutorial

JUnit is a unit testing framework for the Java programming language. JUnit has been important in the development of test-driven development, and is one of a family of unit testing frameworks collectively known as xUnit that originated with JUnit.

This tutorial will teach you how to use JUnit in your day-2-day life of any project unit testing while working with Java programming language.


This tutorial has been prepared for the beginners to help them understand basic functionality of JUnit tool. After completing this tutorial you will find yourself at a moderate level of expertise in using JUnit testing framework from where you can take yourself to next levels.


We assume you are going to use JUnit to handle all levels of Java projects development. So it will be good if you have knowledge of software development using any programming language specially Java programming and software testing process.

Compile/Execute Java & JUnit Programs

For most of the examples given in this tutorial you will find Try it option, so just make use of it and enjoy your learning.

Try following example using Try it option available at the top right corner of the below sample code box:

public class MyFirstJavaProgram {

    public static void main(String []args) {
       System.out.println("Hello World");

1 - JUnit Quick Reference Guide

A quick JUnit reference guide for Java Programmers.

JUnit Quick Reference Guide

2 - JUnit Useful Resources

A collection of JUnit Sites, Books and Articles is given at this page.

JUnit Useful Resources

3 - Java Tutorials

If you are starting with Java then it's best place to start with.

Java Tutorials

4 - JUnit Interview Questions

Go through the most expected and important interview questions to fill youself with tons of confidence.

JUnit Interview Questions

5 - JUnit Tutorial in PDF

Download a quick JUnit tutorial in PDF format.

JUnit Tutorial in PDF