Question

Java

Project Requirements:

1. Account class
   1. Superclass
   2. Instance variables
      1. clearPassword
         1. String
         2. Must be at least 8 characters long
      2. encryptedPassword : String
      3. key
         1. int
         2. Must be between 1 and 10(inclusive)
      4. accountId - A unique integer that identifies each account
      5. nextIDNum – a static int that starts at 1000 and is used to generate the accountID
      6. no other instance variables needed.
   3. Default constructor – set all instance variables to a default value.
   4. Parameterized constructor
      1. Takes in clearPassword, key.
      2. Calls encrypt method to create encryptedPassword
   5. setClearPassWord(String newPassword)
      1. Takes in a new clear text password.
      2. Calls encrypt method as the encrypted password would need to change.
   6. no encryptedPassword mutator method
   7. setKey(int newKey)
      1. Takes in a new key
      2. calls encrypt method as the encrypted password would need to change.
   8. accountId mutator - uses the static variable nextIDNum to retrieve the next available userID number
   9. encrypt method
      1. Uses the instance variables clearPassword and key to encrypt the password.
      2. Stores the encrypted password in the encryptedPassword instance variable
   10. toString - returns a nicely formatted String representing the instance variables of the Account class

NOTE: Your Account class should ensure the clearPassword is valid as described in the requirements.   If not write an error message to the standard output and continue. Set the clearPassword and encyrptedPassword to the empty String.

2. User Class
   1. Subclass of Account class.
   2. Instance variables
      1. username – String
      2. fullName – String
      3. deptCode – int representing the department code
      4. No other instance variables are needed.
   3. Methods
      1. Default constructor sets all instance variables to a default value
         1. Call the super class constructor passing appropriate parameters to it.
         2. Set the rest of the variables
      2. Parameterized constructors
         1. Call the super class constructor passing appropriate parameters to it.
         2. Set the rest of the variables to the remaining parameters
      3. Accessor and mutator methods for all variables in this class
      4. toString
         1. Calls super class methods as needed.
         2. Returns a nicely formatted String representing the user to include fullName, username, deptCode, accountID number, clearPassword, encryptPassword and key

3. Bot Class
   1. Subclass of Account class.
   2. A class that stores information about an application that performs an automated task.
   3. Instance Variables
      1. botFileName – String representing the file name of the bot
      2. category – String providing the Bot category which will be either IDS, SysAdm, or HelpDesk.
      3. dateUpdated – GregorianCalendar object (from the Java API) that shows the date the Bot was last updated.
      4. createdBy – String representing the creator name or handle.
   4. Methods
      1. Default constructor sets all instance variables to a default value
         1. Call the super class constructor passing appropriate parameters to it.
         2. Set the rest of the variables
      2. Parameterized Constructor
         1. Takes in all parameters required to set the instance variables.
         2. Call the super class constructor passing appropriate parameters to it
         3. Set the rest of the variables to the remaining parameters
         4. Date is a String in the format mm/dd/yyyy.
         5. Convert the date to a format compatible with creating GregorianCalendar object.
         6. Create the GregorianCalendar object
      3. Accessor and mutator methods for all variables in this class.
      4. toString
         1. Calls super class methods as needed
         2. Returns a nicely formatted String representing the Bot to include Bot file name, purpose, date updated, creator name, accountID number, clearPassword, encryptPassword and key

4. The AccountTester
   1. This class should consists of a main method that tests all the methods in each class, either directly by calling the method from the Tester or indirectly by having another method call a method.
   2. User and Bot information will be read from a file. A sample file is provided. Use this file format to aid in grading. Using file processing makes entering and testing program with data sets much more efficient.
   3. The file created should include valid and invalid passwords that fully tests the application.
   4. Included is file called data.txt contains Account data. Your project will be graded using a similar input file. Your project must run with an input file formatted as data.txt is formatted. Note the file format is as follows:
      1. Character designation of type of player ( u- User, b - Bot)
      2. User – username,fullname,deptCode
      3. Bot – botFilename,category,dateUpdated,createdBy
      4. Account data – common data for both types
   5. Creates an array of Account objects.
      1. Populate the array with both User and Bot objects.
      2. Retrieves each object stored in the arrau and calls its toString method polymorphically and displays the results.

7. Create UML Class Diagram for the final version of your project. 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.
   4. The AccountTester does not need to be included.
   5. Refer to the UML Distilled pdf on the content page as a reference for creating class diagrams

You should have 10 files for this assignment:

• User.java - The User class
• Bot.java - The Bot class
• Account.java – The Account class.
• AccountTester.java A driver program for your project
• data.txt - your test file
• Simply UML Class diagram of your 4 classes, do not include the Tester. (Dia file or image file , jpg, gif, pdf etc)
• The javadoc files for all the classes except the tester.(Do not turn in)

This is what I have so far

public class Account {

    private static int nextIDNum = 1000;

    private String clearPassword;
    private String encryptedPassword;
    private int key;
    private int accountID;

    public Account() {
        this.clearPassword = "";
        this.encryptedPassword = "";
        this.key = 0;
        this.accountID = nextIDNum;
        updateNextIDNum();
    }

    public Account(String clearPassword, int key) {
        if (clearPassword.length() >= 8 && 1 <= key && key <= 10) {
            this.clearPassword = clearPassword;
            this.key = key;
            this.encryptedPassword = "";
            encrypt();
        } else {
            System.out.println("ERROR::Minimum password length should be 8
" +
                    "Key should be between [1 and 10]");
            this.clearPassword = "";
            this.encryptedPassword = "";
            this.key = 0;
        }
        this.accountID = nextIDNum;
        updateNextIDNum();
    }

    private void encrypt() {

        for (char letter : clearPassword.toCharArray()) {
            char shift = (char) (((letter + key) % 90) + 33);
            encryptedPassword += shift;
        }
    }

    public void setClearPassword(String clearPassword) {
        this.clearPassword = clearPassword.length() >= 8 ? clearPassword : this.clearPassword;
        encrypt();
    }

    public void setKey(int key) {
        this.key = (1 <= key && key <= 10) ? key : this.key;
        encrypt();
    }

    public void updateNextIDNum() {
        Account.nextIDNum++;
    }

    @Override
    public String toString() {
        return "Account ID: " + this.accountID + ", Encrypted Password: " +
                this.encryptedPassword + "      ["+ key+"]:Key" ;
    }


    public static void main(String[] args) {

        Account account  = new Account("SScret#123",7);
        System.out.println(account);
    }
}

Answer 1

Here are the User and Bot java classes. In order to write the Tester driver class need the input file to implement the class.

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public class User extends Account {
    private String userName;
    private String fullName;
    private int deptCode;

    public User() {
        super();
        this.userName = "";
        this.fullName = "";
        deptCode = 0;
    }

    public User(String clearPassword, int key, String userName, String fullName, int code) {
        super(clearPassword, key);
        this.userName = userName;
        this.fullName = fullName;
        this.deptCode = code;
    }


    @Override
    public String toString() {
        return "Username: " + userName +
                "Fullname: " + fullName +
                "Dep Code: " + deptCode +
                super.toString();
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getFullName() {
        return fullName;
    }

    public void setFullName(String fullName) {
        this.fullName = fullName;
    }

    public int getDeptCode() {
        return deptCode;
    }

    public void setDeptCode(int deptCode) {
        this.deptCode = deptCode;
    }
}

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import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;

public class Bot extends Account {

    private String botFileName;
    private String category;
    private GregorianCalendar dateUpdated;
    private String createdBy;

    public Bot() {
        super();
        this.botFileName = "";
        category = "";
        DateFormat ndf = new SimpleDateFormat("dd/MM/yyyy");
        dateUpdated = new GregorianCalendar();
        createdBy = "";
    }

    public Bot(String clearPassword, int key, String botFileName, String category, GregorianCalendar dateUpdated, String createdBy) {
        super(clearPassword, key);
        this.botFileName = botFileName;
        this.category = category;
        this.dateUpdated = dateUpdated;
        this.createdBy = createdBy;
    }

    @Override
    public String toString() {
        return "File name: " + botFileName +
                "Category: " + category +
                "Updated on: " + dateUpdated.get(Calendar.MONTH) + "/" + dateUpdated.get(Calendar.DAY_OF_MONTH) + "/" +
                dateUpdated.get(Calendar.YEAR) + " " +
                "Created by:" + dateUpdated +
                super.toString();
    }

    public String getBotFileName() {
        return botFileName;
    }

    public void setBotFileName(String botFileName) {
        this.botFileName = botFileName;
    }

    public String getCategory() {
        return category;
    }

    public void setCategory(String category) {
        this.category = category;
    }

    public GregorianCalendar getDateUpdated() {
        return dateUpdated;
    }

    public void setDateUpdated(GregorianCalendar dateUpdated) {
        this.dateUpdated = dateUpdated;
    }

    public String getCreatedBy() {
        return createdBy;
    }

    public void setCreatedBy(String createdBy) {
        this.createdBy = createdBy;
    }
}

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