class Rectangle implements Shape
{
  double x, y; // position
  double w, h; // width and height
  
  Rectangle(double width, double height){
    x = 0;
    y = 0;
    w = width;
    h = height;
  }
  
  double area(){
    return w*h;
  }
  
  public void setPosition(double xpos, double ypos){
    x = xpos;
    y = ypos;
  }
  
  public void printDetails(){
    System.out.println("Rectangle: pos = ("+x+", "+y+"), area = "+area());
  }
}