public class Circle {

  private double x;
  private double y;
  private double radius;

  Circle(){
    this.x = 0;
    this.y = 0;
    this.radius = 0;
  }

  Circle(double x, double y, double radius){
    this();
    this.x = x;
    this.y = y;
    this.radius = radius;
  }

  public double getX() { return x; }
  public void setX(double x){ this.x = x; }
  public double getY() { return y; }
  public void setY(double x){ this.y = y; }
  public double getRadius() { return radius; }
  public void setRadius(double radius){ this.radius = radius; }

}