Java programming finding radius of circle

Question

Create a Java function which calculates the radius of a circle:

1. The function should take no arguments.

2. Ask the user to provide the area value of the circle.

3. Calculate the radius based on the value provided by the user

. 4. Display the radius to the user.

5. Exit the function.

6. Call the function in the main program.

Answer 1

import java.util.Scanner;

class CircleRadius

{

CircleRadius()

{

Scanner scanner = new Scanner(System.in);

double circleArea=-1;

while (circleArea<=0)

{

System.out.print(" Please input the Area of the Circle :>");

circleArea = scanner.nextDouble();

}

double circleRadius = Math.sqrt(circleArea/Math.PI);

System.out.println(" The radius is " + circleRadius);

}

public static void main(String args[])

{

new CircleRadius();

}

}