Student class:

• Instance variables
  • name
  • id
• Constructors:
  • Default constructor
  • Constructor that has id and name passed to the constructor
• Methods:
  • Accessors
    • int getID( )
    • String getName( )

Class Roster: This class will implement the functionality of all roster for school.

• Instance Variables
  • a final int MAX_NUM representing the maximum number of students allowed on the roster
  • an ArrayList storing students
• Constructors
  • a default constructor should initialize the list to empty strings
  • a single parameter constructor that takes an ArrayList
  • Both constructors should initialize the instance variables
• Methods
  • Accessors
    • boolean containsStudent(String studentName) //@returns true if studentName is in roster
    • String retrieveById(int id) //@ returns Student name associated with id
    • int retrieveByName(String Student) //@returns id associated with String Student
  • Mutators:
    • boolean addStudent(String studentName, int studentId) ;//adds student name and id to end of roster
      • This method should not allow a student to be added if the name or the studentId is already in the roster. Also, make sure that the total number of students does not exceed MAX_NUM. Hint: Make user of the containsStudent() method
    • boolean removeStudent(int id) // removes student from roster based on id. Make sure that you maintain the integrity of the parallel ArrayLists.
    • boolean removeStudent(String name) //removes student based on name. Make sure that you maintain the integrity of the parallel ArrayLists.

Grading rubric

constructors

1 single parameter

1 default

-> initializes both Array Lists

-> initalize MAX_NUM

2 boolean containsStudent(String studentName)

//@returns true if studentName is in roster

2 String retrieveById(int id)

//@ returns Student name associated with id

2 int retrieveByName(String Student)

//@returns id associated with String Student

1 boolean addStudent(String studentName, int studentId) ;

//adds student name and id to end of roster

This method should not allow a student to be added if the name or the studentId is already in the roster or allow the total number of students to exceed MAX_NUM. Hint: Make user of the containsStudent() method

//The next 2 methods must maintain the integrity of the parallel ArrayLists. If you remove from 1 then remove the element in the other ArrayList associated with the first list's elements. In other words, if you remove a student based on his or her name, make sure that you also remove his or her id from the other ArrayList.

3 boolean removeStudent(int id)

// removes student from roster based on id

3 boolean removeStudent(String name)

//removes student based on name

Total points 15

Testing data:

Student names: Jack, Jane, Janet, Jasmin

Student IDs: 1005, 1007, 1009, 1011

output

Add: Jessie, 1017

Remove: Jane

output

Remove: 1011

Retrieve ID: 1011

Retrieve student: Jessie

Output

Add Jessie, 1017, output if adding is successful