@Override
public boolean add(Product pr)
{
  if (!this.contains(pr)){
      System.out.println("Debug: Added New Product");
      super.add(pr);

  } else {
      System.out.println("Debug: else");

      double x = pr.getPrice();
         int q = pr.getQuantity();

     for (int i=0; i < super.size(); i++){
         System.out.println("Debug: ForLoop");

         if (super.get(i).equals(pr)){
            System.out.println("Debug: Product merge");

            int w = super.get(i).getQuantity();
            double y = super.get(i).getPrice();

            super.get(i).setQuantity(q + w);
            super.get(i).setPrice(y + x);
         }
     }
  }
  return true;
}