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# Java Program to Calculate Area and Perimeter of a Square

This article is created to cover a program in Java that calculates area and perimeter of a square based on the length of its side entered by user at run-time of the program.

**Note - **The area of a square is calculated using the formula **s*s** or **s ^{2}**. Where

**s**is the length of side.

**Note - **The perimeter of a square is calculated using the formula **4*s**.

## Find Area of Square in Java

The question is, *write a program in Java to find and print area of a square.* Following program is its answer:

import java.util.Scanner; public class CodesCracker { public static void main(String[] args) { float side, area; Scanner s = new Scanner(System.in); System.out.print("Enter the Side Length of Square: "); side = s.nextFloat(); area = 4*side; System.out.println("\nArea = " +area); } }

The snapshot given below shows the sample run of above Java program with user input **10** as side length of a square whose
area we want to see using the program:

## Find Perimeter of Square in Java

The question is, *write a program in Java to find and print perimeter of a square.* The program given below is its answer:

import java.util.Scanner; public class CodesCracker { public static void main(String[] args) { float s, perimeter; Scanner scan = new Scanner(System.in); System.out.print("Enter the Side Length of Square: "); s = scan.nextFloat(); perimeter = 4*s; System.out.println("\nPerimeter = " +perimeter); } }

The sample run of above program with same user input as of previous program, i.e., **10**, is:

## Calculate Area and Perimeter of Square in Java - Single Program

After combining both the program given above, this program is created, that calculates and prints the area and perimeter value both, of a square, whose side length is entered by user at run-time.

import java.util.Scanner; public class CodesCracker { public static void main(String[] args) { Scanner scan = new Scanner(System.in); System.out.print("Enter the Side Length of Square: "); float s = scan.nextFloat(); float a = s*s; float p = 4*s; System.out.println("\nArea = " +a); System.out.println("\nPerimeter = " +p); } }

The sample run of above program with user input **23** as side length of square is shown in the following snapshot:

**Note - **For Area and Perimeter of Rectangle Program in Java,
refer to its separate article.

#### Same Program in Other Languages

- Calculate Area & Perimeter of a Square in C
- Calculate Area & Perimeter of a Square in C++
- Calculate Area of a Square in Python
- Calculate Perimeter of a Square in Python

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