Goal : Practicing classes, interactive program

Follow the template provided at https://github.com/pisanuw/css142/ to create a Student.java, University.java and Registrar.java. Pay attention to the comments. The Readme.txt file has list of input commands that you can copy and paste to make it easier for testing.

You will have to play with the existing JAR file to get a sense of the interaction.

Student -- Each student has a name, list of registered courses kept in an array, and a variable numberOfRegisteredCourses showing how many courses they are currently registered in. The variable university is set to the University object that the student is enrolled in.

University -- University object keeps track of courses and students. Students enroll at the university, courses can be added to the list of courses.

Registrar -- Registrar provides the menu choices to create a new University object, add new courses and students to the university.

A typical interaction (as provided in Readme.txt) is as follows:

Welcome to the Registrar program Enter a name for University: UWB Welcome to the menu 1. Display information about the university 2. List all courses

3. Add a course 4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 1 Choice is 1 UWB has 0 courses and 0 students

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Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course 4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 2 Choice is 2 Courses are:

Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course 4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 3 Choice is 3 Enter a course name: 142 Added new course

Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course 4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 1 Choice is 1 UWB has 1 courses and 0 students

Welcome to the menu 1. Display information about the university 2. List all courses

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3. Add a course 4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 2 Choice is 2 Courses are: 142

Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course 4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 3 Choice is 3 Enter a course name: 142 Already have a course named 142

Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course 4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 3 Choice is 3 Enter a course name: 132 Added new course

Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course

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4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 4 Choice is 4 Enter a student name: Kris Enrolled student

Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course 4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 1 Choice is 1 UWB has 2 courses and 1 students

Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course 4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 4 Choice is 4 Enter a student name: Jo Enrolled student

Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course 4. Enroll a new student 5. List all students

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6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 6 Choice is 6 Enter a student name: Johnny Could not find student with name Johnny

Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course 4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 5 Choice is 5 Students are: Kris Jo

Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course 4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 6 Choice is 6 Enter a student name: Kris Enter a course name: 142 Kris is now registered for 142 Registered student for a course

Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course 4. Enroll a new student

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5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 7 Choice is 7 Enter a course name: 132 Students in 132 are:

Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course 4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 7 Choice is 7 Enter a course name: 200 200 is not one of the courses offered

Welcome to the menu 1. Display information about the university 2. List all courses 3. Add a course 4. Enroll a new student 5. List all students 6. Register a student for a course 7. List all students enrolled in a course 10. Exit Enter command: 10 Choice is 10 Thank you for using the Registrar program

If you complete all the requirements, you can attempt the bonus options. You will only get bonus points if the your base program is correct, so do not attempt the bonus part unless you have tested your program thoroughly..

Bonus +2 points - Implement a menu item to drop a course.

6

Bonus +5 points - Change the menu system, so you can work with multiple universities. You will need to make significant changes to the menu system.

Below is a copy of the 3 class templates

/**

* Write a description of class Registrar here.

*

* @author (your name)

* @version (a version number or a date)

*/

import java.util.*;

public class Registrar

{

// static variable, so we can use the same keyboard for all input

static Scanner keyboard = new Scanner(System.in);

// prompt user for integer and return it

private static int getChoice(String prompt)

{

System.out.print(prompt);

int choice = keyboard.nextInt();

return choice;

}

// prompt user for String and return it

private static String getString(String prompt)

{

System.out.print(prompt);

String str = keyboard.next();

return str;

}

// Main menu for program, asks university name

// creates university object and calls universityMenu

public static void mainMenu()

{

System.out.println("Welcome to the Registrar program");

String uniName = getString("Enter a name for University: ");

University uni = new University(uniName);

universityMenu(uni);

}

// Main university menu with registrar functions

private static void universityMenu(University uni)

{

System.out.println("Welcome to the " + uni + " menu");

System.out.println("1. Display information about the university");

System.out.println("2. List all courses");

System.out.println("3. Add a course");

System.out.println("4. Enroll a new student");

System.out.println("5. List all students");

System.out.println("6. Register a student for a course");

System.out.println("7. List all students enrolled in a course");

System.out.println("10. Exit");

int choice = getChoice("Enter command: ");

System.out.println("Choice is " + choice);

switch (choice)

{

case 1: uni.information(); break;

case 2: uni.listCourses(); break;

case 3: addCourse(uni); break;

case 4: enrollAStudent(uni); break;

case 5: uni.listStudents(); break;

case 6: registerStudentForCourse(uni); break;

case 7: listStudentsInCourse(uni); break;

case 10:

System.out.println("Thank you for using the Registrar program");

System.exit(0);

default: System.out.println("Invalid choice " + choice);

}

System.out.println();

universityMenu(uni);

}

// checks if the course is already offered at university

// if course is not offered, adds course

private static void addCourse(University uni)

{

// TODO

System.out.println("Added new course");

}

// gets name from user, creates Student object and

// enrolls the new student at university

private static void enrollAStudent(University uni)

{

// TODO

System.out.println("Enrolled student");

}

// gets name from user, checks if the student with that name

// can be found at university.

// If student is found, gets course name

// if course is offered at university and student is not

// already registered for the course, add student to that course

private static void registerStudentForCourse(University uni)

{

// TODO

System.out.println("Registered student for a course");

}

// gets course name from user, if course is offered

// prints all students taking that course

private static void listStudentsInCourse(University uni)

{

// TODO

}

// calls mainMenu - useful when running from command line outside of BlueJ

public static void main(String[] args)

{

mainMenu();

}

}

/**

* Write a description of class Student here.

*

* @author (your name)

* @version (a version number or a date)

*/

public class Student

{

private static int MAX_REGISTERED_COURSES = 4; // max number of courses a student can enroll

private String name; // name of student

private String registeredCourses[]; // list of currently registered courses

private int numberOfRegisteredCourses; // number of courses currently registered

private University university; // university student belongs to

// constructor -- create a new student at this university

public Student(String newName, University uni)

{

// TODO

}

// return the name of student

// name is a private variable, so need getter method

public String getName()

{

return name;

}

// return true if student is registered for the given course

public boolean isRegisteredFor(String courseName)

{

// TODO

return false;

}

// add the course to the list of registeredCourses

// Display message if University does not foffer this course

// Display message if student already registered for this course

public void add(String courseName)

{

// TODO

System.out.println(name + " is now registered for " + courseName);

}

// list all courses that student is registered for

private void listCourses()

{

// TODO

}

public void drop(String courseName)

{

// HARD

// Bonus question

}

}

/**
	* Write a description of class University here.
	*
	* @author (your name)
	* @version (a version number or a date)
	*/
	public class University
	{
	private static int MAX_COURSES = 100; // max courses at university
	private static int MAX_STUDENTS = 1000; // max students at university
	private String courses[]; // courses currently offered
	private int numberOfCourses; // number of courses currently on offer
	private Student students[]; // students enrolled at university
	private int numberOfStudents; // number of students currently enrolled
	private String name; // name of university
	// constructor -- set name of university
	// initialize courses array,
	// initialize students array
	// initialize numberOfCourses, numberOfStudents
	public University(String newName)
	{
	// TODO
	}
	// return true if a course with the given name is offered
	public boolean hasCourse(String courseName)
	{
	// TODO
	return false;
	}
	// print out all courses offered
	public void listCourses()
	{
	System.out.println("Courses are: ");
	// TODO
	}
	// add a new course to courses[]
	public void addCourse(String courseName)
	{
	// TODO
	}
	// print out all students enrolled at university
	public void listStudents()
	{
	System.out.println("Students are:");
	// TODO
	}
	// print out all students enrolled in htis course
	public void listStudentsInCourse(String courseName)
	{
	System.out.println("Students in " + courseName + " are:");
	// TODO
	}
	// return a Student object based on name
	// if no student with that name found, return null
	public Student getStudent(String name)
	{
	// TODO
	return null;
	}
	// enroll a student at university
	public void enroll(Student student)
	{
	// TODO
	}
	// display information about university
	public void information()
	{
	System.out.println(name + " has " + numberOfCourses + " courses and " + numberOfStudents + " students");
	}
	// short string when university object is printed
	public String toString()
	{
	return "<" + name + ">";
	}
	}