Problem Description In this post, we will write a sample java program to add two matrices. We would prompt the matrix dimensions and the matrix elements from the user. We will calculate the matrix sum as a third matrix and display the output in the console window. At the end of the post, we will […]
Difference between Use Case and Test Case? In this tutorial, let’s understand the difference between a Use case and a test case. In software development and testing, both use cases and test cases are important tools used to describe and validate how a system behaves. Testcases are written with an intent to test the system […]
How to overload a Constructor in Java In this tutorial, we will learn to overload constructor methods in Java with an example. We would take the Dog class as an example. We will create two constructors for the class. The default no-arg constructor and an overloaded constructor that accepts the object arguments in the parameters. […]
Introduction In this tutorial, we will learn the difference between static variables and instance variables in Java language. Static variables Static variables belong to the class. There are also known as class variables. countDogObjects is a static int variable in the example. static variables have a single copy of the variable for the class and […]
How to pass an array to a method in Java In Java, methods are used to break the Java program into small modules. These methods are used to call from other methods. The caller method can pass data to the methods as parameters. The data that is being passed from the caller or invoking method […]
What is a String? A String is a sequence of characters and the String class is contained in standard java.lang package. Using the object of this class we can manipulate the series if characters. Strings are constant and immutable in Java. String values cannot be changed after they are created. If we need mutable Strings […]