In this part we will build

1. An API

2. Implement defensive coding mechanisms.

3. Implement data structures to make application scalable

4. Add a new feature to make option choices.

Requirements and Approach for Assignment 3 Your first step is to re-implement our current system with the same functionality, but with code that's better designed to handle multiple models. Technical Requirement - Set of Models(Automobile) should be saved using LinkedHashMap. Set of OptionSet in each Model and respective Options can be saved in an ArrayList. In addition, both Automobile and Option Set will need some methods for keeping track of which options, a user has chosen. To try and keep straight which methods are for defining options, and which are for choosing options, I've put Choice in the name of the new methods related to tracking user choices. Here's a UML class diagram for additional things in Automobile: make: String - model: String - optionSet: ArrayList - choice: ArrayList + getMake(): String + setMake (make: String): void + getModel(): String + setModel (model: String): void + getoptionChoice (setName: String): String + getOptionChoicePrice (setName: String): int + setOptionChoice (setName: String, optionName: String): void + get TotalPrice (): int The method setOption Choice() is for choosing a particular option in an option set. E.g., setOptionChoice ("transmission", "standard"); would choose the standard transmission option. After the above choice is set, getOption Choice("transmission") would return "standard" and getOptionChoicePrice("transmission") would return -815. To make it easy to define the Automobile methods for tracking option choices, add the following methods to OptionSet: + getOptionChoice(): Option + setOptionChoice (optionName: String): void setOptionChoice(), given the name of an option, would save that choice inside the option set. getOptionChoice() would return the option chosen if any, otherwise it should return null. To test this new Automobile class, write a driver program to read your text input file, populate an instance of Automobile class and print the OptionSet's and their respective options. Your application should work just as it did before, but will be much closer to being able to handle multiple models. (This means that you can still select an OptionSet with their respective options and calculate the car price, given user's selection.) Working with LinkedHashMap In order to access elements in Linked HashMap, you will need to associate an Iterator and then use it to find the elements in LinkedHashMap. Requirements and Approach for Assignment 3 Your first step is to re-implement our current system with the same functionality, but with code that's better designed to handle multiple models. Technical Requirement - Set of Models(Automobile) should be saved using LinkedHashMap. Set of OptionSet in each Model and respective Options can be saved in an ArrayList. In addition, both Automobile and Option Set will need some methods for keeping track of which options, a user has chosen. To try and keep straight which methods are for defining options, and which are for choosing options, I've put Choice in the name of the new methods related to tracking user choices. Here's a UML class diagram for additional things in Automobile: make: String - model: String - optionSet: ArrayList - choice: ArrayList + getMake(): String + setMake (make: String): void + getModel(): String + setModel (model: String): void + getoptionChoice (setName: String): String + getOptionChoicePrice (setName: String): int + setOptionChoice (setName: String, optionName: String): void + get TotalPrice (): int The method setOption Choice() is for choosing a particular option in an option set. E.g., setOptionChoice ("transmission", "standard"); would choose the standard transmission option. After the above choice is set, getOption Choice("transmission") would return "standard" and getOptionChoicePrice("transmission") would return -815. To make it easy to define the Automobile methods for tracking option choices, add the following methods to OptionSet: + getOptionChoice(): Option + setOptionChoice (optionName: String): void setOptionChoice(), given the name of an option, would save that choice inside the option set. getOptionChoice() would return the option chosen if any, otherwise it should return null. To test this new Automobile class, write a driver program to read your text input file, populate an instance of Automobile class and print the OptionSet's and their respective options. Your application should work just as it did before, but will be much closer to being able to handle multiple models. (This means that you can still select an OptionSet with their respective options and calculate the car price, given user's selection.) Working with LinkedHashMap In order to access elements in Linked HashMap, you will need to associate an Iterator and then use it to find the elements in LinkedHashMap