public class Bookcase extends Furniture{ private int shelves; public Bookcase(String model, int weight, int category,int shelves) { super(model, weight, category); this.shelves=shelves; } public double calculatePrice() { double currentPrice = 50*shelves ; if(this.getCategory()==1) { currentPrice=(50*shelves)+(0.2*currentPrice); } else if(this.getCategory()==2) { currentPrice=(50*shelves)+(0.3*currentPrice); }else if(this.getCategory()==3) { currentPrice=(50*shelves)+(0.5*currentPrice); } return currentPrice; } public String chooseCategory() { String aCategory=""; if(this.getCategory()==1) { aCategory ="Plastic"; } else if(this.getCategory()==2) { aCategory = "Metallic"; }else if(this.getCategory()==3) { aCategory = "Wooden"; } return aCategory; } public int getShelves() { return shelves; } public String getInfo() { return super.getInfo() + "Shelves: "+this.getShelves(); } }