Program to demonstrate how to Calculate Area and Perimeter of Rectangle in Java.
Output of the program :
package com.hubberspot.example;
// Import java.util.Scanner to read data from
// console
import java.util.Scanner;
public class RectangleAreaPerimeterDemo {
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 length, breadth , area and perimeter of Rectangle.
int length = 0;
int breadth = 0;
int area = 0;
int perimeter = 0;
// prompt the user to enter value of length of
// Rectangle
System.out.print("Enter the length of Rectangle : ");
// store the length into length variable entered by user
length = scanner.nextInt();
// prompt the user to enter value of breadth of
// Rectangle
System.out.print("Enter the breadth of Rectangle : ");
// store the breadth into breadth variable entered by user
breadth = scanner.nextInt();
// Calculate area of Rectangle by multiplying length into breadth.
area = length * breadth;
// Calculate perimeter of Rectangle by 2 * (length + breadth)
perimeter = 2 * (length + breadth);
// Output area and perimeter to the console
System.out.println("Area of Rectangle is : " + area);
System.out.println("Perimeter of Rectangle is : " + perimeter);
}
}
Output of the program :
