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 :
