Find area & perimeter of rectangle in java (with example)

Leave a Comment / By Yogesh / August 20, 2016

Given a length and breadth of a rectangle, find the area and perimeter of rectangle.
Area of rectangle is length * breadth
- e.g if length is 5 and breadth is 7, then area of rectangle is
  - Area = 5 * 7
  - Area = 35
Perimeter of rectangle is 2 * (length + breadth)
- e.g if length is 5 and breadth is 7, then perimeter of rectangle is
  - Perimeter = 2 * (5 + 7)
  - Perimeter = 24

Area Perimeter rectangle — Fig 1: Area & Perimeter of Rectangle

Program: calculate area & perimeter of rectangle in java

package org.learn;
 
import java.util.Scanner;
 
public class AreaAndPerimeterOfRectangle {
 
    public static void main(String[] args) {
        try (Scanner scanner = new Scanner(System.in)) {
            System.out.printf("1. Enter length of rectangle : ");
            double length = scanner.nextDouble();
             
            System.out.printf("2. Enter breadth of rectangle : ");
            double breadth = scanner.nextDouble();
             
            //Area of rectangle is length * breadth
            double area = length * breadth;
            //Print area up to two precision
            System.out.printf("3. Area of rectangle is : %4.2f",area);
             
            //Perimeter of rectangle is length * breadth
            double perimeter = 2 * (length + breadth);
            //Print area up to two precision
            System.out.printf("\n4. Perimeter of rectangle is : %4.2f",perimeter);
        }
    }
}

Output: area & aerimeter of rectangle using java is as follows:

Enter length of rectangle : 5
Enter breadth of rectangle : 7
Area of rectangle is : 35.00
Perimeter of rectangle is : 24.00
 
Enter length of rectangle : 10
Enter breadth of rectangle : 15
Area of rectangle is : 150.00
Perimeter of rectangle is : 50.00