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

• 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

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:

1. Enter length of rectangle : 5
2. Enter breadth of rectangle : 7
3. Area of rectangle is : 35.00
4. Perimeter of rectangle is : 24.00

1. Enter length of rectangle : 10
2. Enter breadth of rectangle : 15
3. Area of rectangle is : 150.00
4. Perimeter of rectangle is : 50.00