JUnit and its benefits Unit is an open source framework that has been designed for the purpose
of writing and running tests in the Java programming language. JUnit was
originally written by Erich Gamma and Kent Beck.
Downloading and installing JUnit 4.3.1 In this section, downloading JUnit 4.3.1 address and installation steps have
been given. You can download this in your system and test your program
whether it is functioning well or not.
and testing This section starts with a simple
example that will illustrate the basic concepts involved in testing with
JUnit. In this section, we will be creating a java file named
Calculator.java which has a method named sum() which takes two int
parameters and return addition of these two numbers. So here we have to
check whether this method is functioning well in all the conditions or not.