Question

Write a program to calculate and display the area of a Square​

Answer 1

Answer:

1) Using Static Method

import java.util.Scanner;

class calculateArea

{

public static void main (String args[])

{

Scanner sc = new Scanner(System.in);

System.out.println("Enter length of side.");

double a = sc.nextDouble();

double Area = Math.pow(a,2);

System.out.println("Area: " + Area);

}

}

Refer to the attachment for an example on 6.

2) Using Method

import java.util.Scanner;

class AreaOfSquare

{

public static void main(String args[])

{

Scanner sc= new Scanner(System.in);

System.out.println("Enter length of side of the square:");

double a= sc.nextDouble();

double cal=area(a);

System.out.println("Area of Square is: " + cal);

}

static double area(double r)

{

return r*r;

}

}

Refer to the above attachment for an example on 4.

Answer 2

Static Method:

import java.util.Scanner;

class hey

{

public static void main (String args[])

{

Scanner sc = new Scanner (System.in);

System.out.println("Enter side.");

int side = sc.nextInt();

int area = side*side;

System.out.println("Area of Sqaure: " + area);

}

}