Program to demonstrate how to calculate Area and Perimeter of Square in Java
package com.hubberspot.example; // Import java.util.Scanner to read data from // console import java.util.Scanner; public class SquareAreaPerimterDemo { public static void main(String[] args) { // Creating a Scanner object using a constructor // which takes the System.in object. There are various // constructors for Scanner class for different // purposes. We want to use Scanner class to read // data from console on the system, So we are using // a constructor which is taking an System.in object Scanner scanner = new Scanner(System.in); // Create three variables which will hold the // values for side, area and perimeter of square int side = 0; int area = 0; int perimeter = 0; // prompt the user to enter value of length of side of // square System.out.println("Enter the length of side of square "); // store the side length into side variable entered by user side = scanner.nextInt(); // Calculate area of square by multiplying side into side area = side * side; // Calculate perimeter of square by multiplying 4 into side perimeter = 4 * side; // Output area and perimeter to the console System.out.println("Area of Square is : " + area); System.out.println("Perimeter of Square is : " + perimeter); } }
Output of the program :