P. 81 Ex. 11.5

// Shavit Borisov
// CW

import java.util.Scanner;

public class circleMain {

    public static void main(String[] args)

    {
        Scanner in = new Scanner(System.in);

        int radius;
        String color;

        System.out.print("Enter the circle's color: ");
        color = in.next();

        while(!color.equals("black"))
        {
            System.out.print("Enter your circle's raduis: ");
            radius = in.nextInt();

            circle input = new circle(radius, color);

            System.out.printf("The circle's area is %f, its perimeter is %f and its color is %s.\n",
                           input.area(), input.perimeter(), input.color());

            System.out.print("Enter the circle's color: ");
            color = in.next();
        }

        in.close();
    }
}

// Next class

public class circle
{
    private int radius;
    private String color;

    public circle(int radius, String color)
    {
        this.radius = radius;
        this.color = color;
    }

    public double area()
    {
        return radius * radius * Math.PI;
    }

    public double perimeter()
    {
        return (radius + radius) * Math.PI;
    }

    public String color()
    {
        return color;
    }
}