public class Parallelogram
{
  double x, y; // position
  double w, h; // width and height (slant)
  double angle;
  
  Parallelogram(double width, double height, double an){
    x = 0;
    y = 0;
    w = width;
    h = height;
    angle = an;
  }
  
  double area(){
    return w*h*Math.sin(angle);
  }
  
  void setPosition(double xpos, double ypos){
    x = xpos;
    y = ypos;
  }
  
  double getAngle(){
    return angle;
  }
  
  void printDetails(){
    System.out.println("pos = ("+x+", "+y+"), area = "+area());
  }
  
  public String toString(){
    return "pos = ("+x+", "+y+"), area = "+area();
  }

  public static void main(String args[]){
    Rectangle rect1;
    Parallelogram plg1;
    
    rect1 = new Rectangle(20, 10);
    plg1 = new Parallelogram(20, 10, 1);
    
    rect1.printDetails();
    plg1.printDetails();
    System.out.println(rect1);
    System.out.println(plg1);
  }
}