Automation

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 { […]

Introduction In this tutorial, we will write a simple java program to get input from the keyboard using the Scanner class. Import Scanner We can import the Scanner class in the Java program using the below import statement. Alternatively, hover the mouse on the class name, Right-click, and select the import statement. import java.util.Scanner;   […]

Given two sides with length 7 cm and 9 cm and angle between them is 25 degrees. Calculate the third side length of the triangle. Solution: Mathematical proof: Based on the data given , you can calculate the height of the triangle as shown in the above figure.   b side can be split into […]

Introduction An Eclipse Perspective is a collection and arrangement of views and navigation actions in the Eclipse UI screen. You can choose a different perspective from the Open Perspective window. Window >> Open Perspective >> Other… Choose your desired perspective from the window as shown below. To see the list of all perspectives, click on […]

Program Description Write a java program to demonstrate a simple while loop. We use a while loop in a program when we know the exit condition and not sure how many times to loop the iterations.  The loop will be executed until the loop expression is true. There is another variation of the loop called […]

Overview The Apache Commons CLI library provides an API for parsing command line options passed to Java programs. It also provides support for options available for a command line tool in different formats like POSIX , GNU etc. More information about the library, please visit : https://commons.apache.org/proper/commons-cli/index.html Maven dependency: <!– https://mvnrepository.com/artifact/commons-cli/commons-cli –> <dependency> <groupId>commons-cli</groupId> <artifactId>commons-cli</artifactId> […]