Question

The following is for a Java Program

Create UML Class Diagram for these 4 java classes. The diagram should include:

1) All instance variables, including type and access specifier (+, -);

2) All methods, including parameter list, return type and access specifier (+, -);

3) Include Generalization and Aggregation where appropriate.

Java Classes description:

1. User Class

1.1 Subclass of Account class.

1.2 Instance variables

__ 1.2.1 username – String

__ 1.2.2 fullName – String

__ 1.2.3 deptCode – int representing the department code

__ 1.2.4 No other instance variables are needed.

1.3 Methods

__ 1.3.1 Default constructor sets all instance variables to a default value

____1.3.1.a Call the super class constructor passing appropriate parameters to it.

____ 1.3.1.b Set the rest of the variables

__ 1.3.2 Parameterized constructors

____ 1.3.2.a Takes in username, clearPassword and the key

____ 1.3.2.b Additional parameters include fullname, and dept code..

____ 1.3.2.c Call the super class constructor passing appropriate parameters to it.

__ 1.3.3 Accessor and mutator methods for all variables in this class. Mutator method should be used to set all instance fields.

__ 1.3.4 toString

____ 1.3.4.a Calls super class methods as needed.

____ 1.3.4.b Returns a nicely formatted String representing the user to include fullName, username, deptCode, accountID number, clearPassword, encryptPassword and key

2. Bot Class

2.1 Subclass of Account class.

2.2 A class that stores information about an application that performs an automated task.

2.3 Instance Variables

__ 2.3.1 botFileName – String representing the file name of the bot

__ 2.3.2 category – String providing the Bot category which will be either IDS, SysAdm, or HelpDesk.

__ 2.3.3 dateUpdated – GregorianCalendar object (from the Java API) that shows the date the Bot was last updated.

__ 2.3.4  createdBy – String representing the creator name or handle.

2.4 Methods

__ 2.4.1 Default constructor sets all instance variables to a default value

____ 2.4.1.a Call the super class constructor passing appropriate parameters to it.

____ 2.4.1.b Set the rest of the variables

__ 2.4.2 Parameterized Constructor

____ 2.4.2.a Takes in all parameters required to set the instance variables.

____ 2.4.2.b Date is a String in the format mm/dd/yyyy.

____ 2.4.2.c Convert the date to a format compatible with creating GregorianCalendar object.

____ 2.4.2.d  Create the GregorianCalendar object

____ 2.4.2.e Call the super class constructor passing appropriate parameters to it

__ 2.4.3 Accessor and mutator methods for all variables in this class.

__ 2.4.4 toString

____ 2.4.4.a Calls super class methods as needed

____ 2.4.4.b Returns a nicely formatted String representing the Bot to include Bot file name, purpose, date updated, creator name, accountID number, clearPassword, encryptPassword and key

3. Account class

3.1 Superclass Abstract Class

3.2 Instance variables

__ 3.2.1 clearPassword String

__ 3.2.2 encryptedPassword : String

__ 3.2.3  key : String

__ 3.2.4 accountId - A unique integer that identifies each account

__ 3.2.5 nextIDNum – a static int that starts at 1000 and is used to generate the accountID

__ 3.2.6 no other instance variables needed.

3.3 Default constructor – set all instance variables to a default value.

3.4 Parameterized constructor

__ 3.4.1 Takes in clearPassword, key.

__ 3.4.2  Calls encrypt method to create encryptedPassword

__ 3.4.3 Call mutator methods to set other instance variables.

3.5 Accessor/mutator methods (Standard except as follows)

__ 3.5.1  setClearPassWord - mutator needs to call encrypt method

__ 3.5.2 no encryptedPassword mutator method

__ 3.5.3 setKey mutator needs to call encrypt method.

__ 3.5.4 accountId mutator - uses the static variable nextIDNum to retrieve the next available userID number

3.6 encrypt method

Private method – only accessible to other methods of the User class
Uses the Vigenere Cypher to encrypts the clearPassword instance variable using the key
Stores the encrypted password in encryptPassword instance variable.

3.7 toString - returns a nicely formatted String representing the instance variables of the Account class

4. CompanyAccounts Class

4.1 The array will be of type Account

4.2 Method names, return types and parameters would change from User to the new super class Account for example

__ 4.2.1 getUser would change to getAccount and return an Account Object

__ 4.2.2 addUser would change addAccount and its parameter would be of type Account.

Answer 1