Java program to enter length and breadth of a rectangle and find its perimeter

In this article, you will learn how to find the perimeter of a rectangle in the Java language.

You should have knowledge of the following topics in java programming.

• Java java.util.Scanner package
• Java main() method
• Java System.out.println() method

Formula

This is the standard formula to calculate the perimeter of a rectangle.

P = 2(l + w)

Where

P = perimeter

l = length of the rectangle

w = width of the rectangle

Source Code

// Java program to find the perimeter of a rectangle
import java.util.Scanner;

public class Main {
    public static void main(String[] args)
    {
    	Scanner in = new Scanner(System.in);

        System.out.println("Enter the length & width of the rectangle::\n");

        // Reading data using readLine
        float l = in.nextFloat();
        float w = in.nextFloat();
        float p;

        /* Calculate perimeter of rectangle */
    	p = 2 * (l + w);

        System.out.print("\n");
        System.out.println("The Perimeter of rectangle = " + p + " units");
    }
}

Run Program

Output

Explanation

In this program, we have taken two inputs from the user rectangle's width 5 and rectangle's height 7.

Then used the standard formula P = 2(l + w) to calculate the perimeter of a rectangle then it will return the 24.0 units the perimeter of the rectangle.