Java Program to Find the Area of Rhombus


This is the Java Program to Find the Area of a Rhombus.

Problem Description

Given the dimensions of a rhombus, find out its area.

Problem Solution

The area of a rhombus can be calculated using the formula:

Area = (diagonal1)*(diagonal2)/2.

Program/Source Code

Here is the source code of the Java Program to Find the Area of a Rhombus. The program is successfully compiled and tested using IDE IntelliJ Idea in Windows 7. The program output is also shown below.

  2. //Java Program to Find the Area of a Rhombus
  4. import;
  5. import;
  7. public class AreaOfARhombus {
  8.     // Function to calculate the area of a rhombus
  9.     public static void main(String[] args) {
  10.         BufferedReader br = new BufferedReader(new InputStreamReader(;
  11.         double l1,l2;
  12.         System.out.println("Enter the length of the diagonals of the rhombus");
  13.         try{
  14.             l1=Double.parseDouble(br.readLine());
  15.             l2=Double.parseDouble(br.readLine());
  16.         }catch (Exception e){
  17.             System.out.println("An error occurred");
  18.             return;
  19.         }
  20.         if(l1<=0 || l2<=0){
  21.             System.out.println("Wrong input");
  22.             return;
  23.         }
  24.         System.out.println("Area = " + (l1*l2)/2 );
  25.     }
  26. }
Program Explanation

1. In function main(), first, the length of the diagonals of the rhombus is taken as input.
2. The condition if(l1<=0 || l2<=0) checks if the input is valid or not.
3. The print statement displays the area of the rhombus.

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Time Complexity: O(1)

Runtime Test Cases
Case 1 (Simple Test Case):
Enter the length of the diagonals of the rhombus
Area = 517.5

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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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