Questions and Answers

Bonus: Provide a GUI for your store. You can use the lab of 7/25 as a starting point and hook your "Store" implementation up to this. You can submit this separately from your P3 implementation, and can use the underlying P2 implementation or the P3 implementation. Your choice. Up to 15 points bonus on this assignment.

Project Description

You are provided with full implementations of three classes and a sample run of the completed program.

• StoreDriver.java - modified version of the StoreDriver of project 2.
• Store.java - a modified version of the Store of project 2.
• BasicItem.java - a revised version of the Item class of project 2, designed to serve as a based class for your implementations of the ItemByCount, ItemByWeight, and ItemByVolume classes.
• samplerun.txt

Your job:

• Create 3 subclasses of the BasicItem class -- ItemByCount, ItemByVolume, and ItemByWeight.

  ItemByCount methods

  public ItemByCount()
  public ItemByCount(String name, String description, int numItems, double pricePerItem)
  public int getNumItems()
  public double getCostPerItem()
  public void setNumItems(int newNum)
  public void setPricePerItem(double price)
  public double value() 
  	-- should return total value of inventory of that item
  public void reportInventory()
  	-- should display info about that item -- see sample run
  public void getData(Scanner k)
  	-- should solicit info needed to specify item
  public void changeQuantity(Scanner k)
  	-- should report current quantity, solicit new quantity, and update 
  

  ItemByWeight methods

  public ItemByWeight()
  public ItemByWeight(String name, String description, double pounds, double pricePerPound)
  public double getPounds()
  public double getPricePerPound()
  public void setPounds(double pounds)
  public void setPricePerPound(double pricePerPound)
  public double value() 
  	-- should return total value of inventory of that item
  public void reportInventory() 
  	-- should display info about that item -- see sample run
  public void getData(Scanner k)
  	-- should solicit info needed to specify item
  public void changeQuantity(Scanner k)
  	-- should report current quantity, solicit new quantity, and update 
  

  ItemByVolume methods

  public ItemByVolume()
  public ItemByVolume(String name, String description, double gallons, double pricePerGallon)
  public double getGallons()
  public void setGallons(double g)
  public double getPricePerGallon()
  public void setPricePerGallon(double ppg)
  public double value() 
  	-- should return total value of inventory of that item
  public void reportInventory() 
  	-- should display info about that item -- see sample run 
  public void getData(Scanner k) 
  	-- should solicit info needed to specify item
  public void changeQuantity(Scanner k) 
  	-- should report current quantity, solicit new quantity, and update