For this assignment you will create a set of simple classes that model a system that maintains a collection of library assets The system utilizes abstract classes and polymorphism to enable an asset manager to keep track of books and periodicals as a single collection Books are able to be checked out whereas periodicals cannot In addition to the classes described below, you will also need to provide a test driver a separate class with a main() to exercise the functionality of your system You will need to implement the following classes based on the description of their attributes and operations Asset this class must be declared abstract, attributes are all private name the name of the asset id the unique id of the asset isAvailable a flag to indicate whether the asset is currently in the library a constructor that requires the creator to supply the id of the asset and appropriately initializes an object public operations to set and get the asset's name public operation to get the asset's id protected operation to get whether or not the asset is in the library public, abstract operation to check out the asset, returns a boolean public, abstract operation to check in the asset, returns a boolean Book this class is a subclass of Asset authors a collection (array) of the names the books authors authorCount the number of authors currently in the collection a constructor that requires the creator to supply the id of the asset and appropriately initializes an object public operations to add an author to the collection of authors and obtain the collection (array) of authors an implementation of the the check out operation if the asset is in the library, it is made unavailable and the operation returns true if the asset is not in the library the operation returns false an implementation of the the check out operation if the asset is not the library, it is made available and the operation returns true if the asset is already in the library the operation returns false an override of toString() which returns a description of the book of the format by , , for example, Introduction to Algorithms by Cormen, Leiserson, Rivest 123456 Periodical this class is a subclass of Asset volume the volume number of the periodical issue the issue number of the periodical a constructor that requires the creator to supply the id of the asset and appropriately initializes an object public operations to set and get the volume number public operations to set and get the issue number an implementation of the the check out operation periodicals can't be checked out so this operation always returns false an implementation of the the check out operation since periodicals cannot be checked out this operation always returns true an override of toString() which returns a description of the book of the format , for example, Nature 493 2 9876543 AssetManager assets a collection (array) of assets, no two assets have the same id assetCount the number of assets currently in the collection a constructor (no parameters) that appropriately initializes the object public operation to add an asset, returns a boolean if there is no asset in the collection with the same id, the asset is added and true is returned if there is an asset in the collection with the same id, the asset is not added and false is returned public operation to find an asset by id if an asset with the id is in the collection it is returned if no asset with the id is in the collection null is returned Your submission will consist of a zip file containing just the necessary java files As always your code must meet the coding standards Previous

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For this assignment you will create a set of simple classes that model a system that maintains a collection of library assets. The system utilizes

For this assignment you will create a set of simple classes that model a system that maintains a collection of library assets. The system utilizes abstract classes and polymorphism to enable an asset manager to keep track of books and periodicals as a single collection. Books are able to be checked out whereas periodicals cannot.

In addition to the classes described below, you will also need to provide a test driver - a separate class with a main() - to exercise the functionality of your system.

You will need to implement the following classes based on the description of their attributes and operations:

Asset - this class must be declared abstract, attributes are all private
- name - the name of the asset
- id - the unique id of the asset
- isAvailable - a flag to indicate whether the asset is currently in the library
- a constructor that requires the creator to supply the id of the asset and appropriately initializes an object
- public operations to set and get the asset's name
- public operation to get the asset's id
- protected operation to get whether or not the asset is in the library
- public, abstract operation to check out the asset, returns a boolean
- public, abstract operation to check in the asset, returns a boolean
Book - this class is a subclass of Asset
- authors - a collection (array) of the names the books authors
- authorCount - the number of authors currently in the collection
- a constructor that requires the creator to supply the id of the asset and appropriately initializes an object
- public operations to add an author to the collection of authors and obtain the collection (array) of authors
- an implementation of the the check out operation
  - if the asset is in the library, it is made unavailable and the operation returns true
  - if the asset is not in the library the operation returns false
- an implementation of the the check out operation
  - if the asset is not the library, it is made available and the operation returns true
  - if the asset is already in the library the operation returns false
- an override of toString() which returns a description of the book of the format
  - "" by <author1>, <author2>, ... :: <id></li> </ul> for example, <ul> <li>"Introduction to Algorithms" by Cormen, Leiserson, Rivest :: 123456 </li> </ul> </li> </ul> </li> <li>Periodical - this class is a subclass of Asset <ul> <li>volume - the volume number of the periodical</li> <li>issue - the issue number of the periodical</li> <li>a constructor that requires the creator to supply the id of the asset and appropriately initializes an object</li> <li>public operations to set and get the volume number</li> <li>public operations to set and get the issue number</li> <li>an implementation of the the check out operation <ul> <li>periodicals can't be checked out so this operation always returns false</li> </ul> </li> <li>an implementation of the the check out operation <ul> <li>since periodicals cannot be checked out this operation always returns true</li> </ul> </li> <li>an override of toString() which returns a description of the book of the format <ul> <li>"<title>", <volume>:<issue> :: <id></li> </ul> for example, <ul> <li>"Nature" 493:2 :: 9876543 </li> </ul> </li> </ul> </li> <li>AssetManager <ul> <li>assets - a collection (array) of assets, no two assets have the same id</li> <li>assetCount - the number of assets currently in the collection</li> <li>a constructor (no parameters) that appropriately initializes the object</li> <li>public operation to add an asset, returns a boolean <ul> <li>if there is no asset in the collection with the same id, the asset is added and true is returned</li> <li>if there is an asset in the collection with the same id, the asset is not added and false is returned</li> </ul> </li> <li>public operation to find an asset by id <ul> <li>if an asset with the id is in the collection it is returned</li> <li>if no asset with the id is in the collection null is returned</li> </ul> </li> </ul> </li> </ul> <p>Your submission will consist of a zip file containing just the necessary .java files. 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