I have been working on this for days and can't get the program to run. I have to name 3 fields, and utilize setRadius() getRadius(). I also must set and compute all fields in setRadius(). At first I had no main, but kept getting error. I included main, program compiles, but won't run. Please help.

```
public class Circle
{
public static void main(String[] args)
{
   Circle myCircle = new Circle();

}
double radius;
double diameter;
double area;

public void Circle()
{
   radius= 1;
   diameter = radius * radius;
   area = Math.PI * radius * radius;

}
public void setRadius()
{
    radius = 1;
    diameter = radius * radius;
    area = Math.PI * (radius * radius);

}
public double getRadius()
{
    return radius;
}
public void display()
{
   System.out.println("The radius is " + radius);
   System.out.println("The diameter is " + diameter);
   System.out.println("The area is " + area);
}

}

```