This lab is focused on using Inheritance hierarchies in a Decorator design pattern. There is also a bit more polymorphism. . Finally, it utilizes the Factory pattern to make ice cream

Problem:

For this lab, you will implement the following decorator hierarchy:

Here are the requirements for each class, broken down:

IceCream is an interface

It must define a public method eat, which returns an IceCream object

IceCreamDecorator is an abstract class

It must implement IceCream

As in class, it must be set up to decorate other IceCream objects

It should have a toString method that returns its internal IceCreams toString() and an eat method which returns the results of its internal IceCream

Four flavors must extend from IceCreamDecorator. I used Chocolate, Mint, Vanilla, and Butterscotch

Each decorate needs to add its flavor to the toString (example: adding Chocolate + the toString of the internal toString())

Each eat method needs

Report that that specific flavored ice cream scoop was eaten

Return the internal ice cream, removing the eaten scoop

BaseIceCream is the base class

The eat method should say the icecream is gone and return null

The toString should simply return Icecream

Additionally, you must write an IceCreamFactory class. It must provide the following functionality:

IceCreamFactory needs some way to store a list of supported flavors

IceCreamFactory should have a makeIceCream method which

Takes an Array or ArrayList of flavors, as Strings

Removes the unsupported flavors

Makes a new BaseIceCream

Adds only one of each supported flavor to the icecream cone, using decorators

That is, a Mint Chocolate Icecream is fine, but not a Mint Mint Icecream

Returns the new IceCream object

Finally, add a driver. This driver should have an ArrayList of IceCream, an IceCreamFactory object, and a main menu with the following operations:

Quit (Leave the Store, in my example) exit the application

Add an icecream cone

Ask a user for a series of Strings to use as Flavors. Then, use the IceCreamFactory object to make a new ice cream cone and add it to the list of existing cones.

Eat an icecream cone

Ask the user for an index of an ice cream cone. If that cone does not exist, report the cone doesnt exist. If the cone does, eat the cone and reassign the cone without that scoop to the old cones position. If at this point the entire cone is gone, remove the null cone from the IceCream list

List the icecream cones

List all the icecream cones that currently exist

The Sample Output shows the flow for all menu options:

Sample Output:

Welcome to the ice cream shop!

---Menu---

(1) Eat an icecream cone

(2) List the icecream cones

(3) Add an icecream cone

(4) Leave the store

1

Enter the index of the ice cream cone you wish to devour

0

No such cone exists

---Menu---

(1) Eat an icecream cone

(2) List the icecream cones

(3) Add an icecream cone

(4) Leave the store

2

You have no icecream!

---Menu---

(1) Eat an icecream cone

(2) List the icecream cones

(3) Add an icecream cone

(4) Leave the store

3

Enter whatever flavors you like from the supported choices: Mint, Chocolate, Vanilla, and Butterscotch

Enter q to stop entering flavors

Mint

Mint

Mint

Mint

Chocolate

Rum

q

---Menu---

(1) Eat an icecream cone

(2) List the icecream cones

(3) Add an icecream cone

(4) Leave the store

3

Enter whatever flavors you like from the supported choices: Mint, Chocolate, Vanilla, and Butterscotch

Enter q to stop entering flavors

Chocolate

Vanilla

Banana

q

---Menu---

(1) Eat an icecream cone

(2) List the icecream cones

(3) Add an icecream cone

(4) Leave the store

2

Mint Chocolate Icecream

Vanilla Chocolate Icecream

---Menu---

(1) Eat an icecream cone

(2) List the icecream cones

(3) Add an icecream cone

(4) Leave the store

1

Enter the index of the ice cream cone you wish to devour

0

The mint scoop is eaten!

---Menu---

(1) Eat an icecream cone

(2) List the icecream cones

(3) Add an icecream cone

(4) Leave the store

1

Enter the index of the ice cream cone you wish to devour

0

The chocolate scoop is eaten!

---Menu---

(1) Eat an icecream cone

(2) List the icecream cones

(3) Add an icecream cone

(4) Leave the store

1

Enter the index of the ice cream cone you wish to devour

0

The icecream is all gone!

---Menu---

(1) Eat an icecream cone

(2) List the icecream cones

(3) Add an icecream cone

(4) Leave the store

2

Vanilla Chocolate Icecream

---Menu---

(1) Eat an icecream cone

(2) List the icecream cones

(3) Add an icecream cone

(4) Leave the store

4

You enter a sad, icecream less existence

> IceCream IceCreamDecorator BaselceCream ChocolateFlavor OtherFlavor1 OtherFlavor2 OtherFlavor3