Automation

Write a Java program using HashMap to store name and age pairs In this tutorial, we will learn to use HashMap to store name and age pairs. HashMap maps keys to values. It implements the Map interface. HashMap is not synchronized and permits nulls. Furthermore, it makes no guarantee as to the order of the […]

How to check the Java version on Windows? You can check the Java version by using the command line window. Command Prompt Type “cmd” in the Search box after clicking on Start. Alternatively, On the Windows 10 operating system, you can ask Cortana to open the command. Say the command “open command prompt” , and […]

Overview POM stands for Project Object Model. Maven POM file is an XML file. You can locate the file under the project root or base directory of the Maven project. It contains crucial information about the project and project configuration that are used by Maven to build the project. Structure Every POM file has the […]

What are the Characteristics of the Java Language? Java is a popular and powerful programming language. In this post, we will briefly discuss some of the main characteristics of Java language. Object-oriented Java is an object-oriented language. Therefore, in Java, everything is an object. The only exceptions are the primitive data types. In OOP, we […]

Difference between CLI program and GUI program? : Key differences and features of CLI and GUI programs are listed below.
CLI Program

Command line program

Problem Statement Given an unsorted array of n integers. Elements can be repeated multiple times in the array. Write a java program to find frequency count of an array item.   Java Program public class ArrayFrequency { public static void main(String[] args) { int n; Scanner input = null; int[] a = null; try { […]