What's wrong

Question

I want model three circles and to calculte it's area & perimeter.
What's wrong this code?

public class Circle{
private double r1;
private double r2;
private double r3;

public double Circle(double r1,double r2,double r3){
this.r1=r1;
this.r2=r2;
this.r3=r3;
}

    public double Mypro(){
    Circle r1=new Circle();
    Circle r2=new Circle();
    Circle r3=new Circle();
    r1.r1=9.2;
    r2.r2=3;
    r3.r3=6;
    }
    public static double getArea(double r){
        return r*r*3.14;
    }
    public static double getPerimeter(double r){
        return 2*r*3.14;
    }
public static void main(String[] args){
System.out.println("Area:"+ getArea(r1) + " ");
    System.out.println("Perimeter:"+ getPerimeter(r1) + " ");
}
}

Answer 1

3axpa

Why there are 3r even 1r is enough to do the job.

You should take r as an input

what is the use of method 'Mypro' and why it has return type 'double'

r1 is non-static so you can't access in main method

you have created object with same name of variables so r1.r1 is a valid?

Constructor can't have return type.

https://code.sololearn.com/cOVld6T6k6BY/?ref=app

Answer 2

Tnx for help me