Thread: Need help with Java Assignment (code partially complete)

Imagine that you were required to write a Java program which will store, manipulate, and print student registration information.

As part of the solution, identify the following classes:
(a) Student
(b) Admissions.

The class Student has the following fields – Name, Address, Id number, Courses, and Date, where:
(a) Name is a user defined class comprising of at minimum first name and last name.
(b) Address is a user defined class comprising of fields - street, city, state, and zip code.
(c) Date is a predefined class in the java.util package
(d) Id number uniquely identifies a student.
(e) Courses is a user defined class that can store at most five courses for which a student may register for. A student after registering should be able to add/drop course(s).


The class Admissions stores and manipulates the student information (student record). Because the list of students may grow dynamically, it is best to use a dynamic data structure such as the ArrayList to store the information. This class should do the following, among other possible activities:
(a) Add student to the list
(b) Remove student from the list.

You are to provide a test class that coordinates the activities of the classes outlined above, by:
• Creating student objects and adding them to the database of the Admissions object
• Removing a student from the database
• Change a student’s last name
• Displaying list of currently registered students
• Displaying list of all students that were dropped from the course

The output must be formatted as follows, and must be placed in a scrollable pane:

CURRENTLY ENROLLED
Id number: 123456
Name: Williams, John
Address: 2525 Hartsfield Road
Tallahassee, FL 33319
Date: September 5, 2010
Courses: COP3337 MAC2311 ENC1102 :
:
:

STUDENT WHO WERE DROPPED
Id number: 56789-0
Name: Roberts, Kay-Anne
Date: September 5, 2010

Code:

import java.util.ArrayList;
 
public class Admissions
{
    ArrayList <Student>list; // The  list
 
   // Required for searching
    int index; 		// Position where record was found
    boolean found;	// Whether or not record was found
    Student student;// Whose record was found
 
    Admissions()
    {
        list = new ArrayList<>();
    }
    void add(Student o)
    {
        // Complete method
    }
    boolean empty()
    {
        // Complete method
    }
    int size()
    {
        return list.size();
    }
    Student remove(int i)
    {
        // Complete method
    }
    ArrayList getList()
    {
        return list;
    }
    int getIndex()
    {
        // Complete method
   }
   Student getStudent()
   {
        return student;
   }
   boolean inList()
   {
        // Complete method
   }
   void search (String id) // Search list depending on the id
    {
        found = false; // Determines if item in list
        index = 0;     // Required for index
        int length = list.size();
 
        while ( index < length && !found) // Yet others may prefer th for loop
        {
            student = list.get(index);
            if (student.getId().compareTo(id) == 0)
                  found = true;
                else
                   index++;
        }
    }
}

admissions Class

 
import java.util.ArrayList;
 
public class Courses
{
	static final int MAX_COURSES = 5;
	ArrayList <String> crses;
 
    public Courses()
    {
        crses = new ArrayList<String>();
    }
 
    boolean add(String s)
    {
    	if (crses.size() >= MAX_COURSES)
    		return false;
    	crses.add(s);
    	return true;
    }
 
    boolean drop(String crse)
 	{
		// Complete method
 	}
 
    ArrayList getCourses()
    {
    	return crses;
    }
}

test class:

 
 
import java.util.ArrayList;
import javax.swing.JOptionPane;
import javax.swing.JTextArea;
import javax.swing.JScrollPane;
 
class StudentAdmissions
{
    public static void main(String arg[])
    {
        Admissions db = new Admissions();
 
        String menu = "1. Add student\n2. Add courses\n3. Drop course\n4. Drop student\n5. Display\n6. Modify name\n7. Exit";
        boolean more = true;
 
        while(more)
        {
            int i = GetData.getInt(menu);
            switch(i)
            {
                case 1: // Register new student
					// Create name object
					String first = GetData.getWord("Enter first name");
                    String last = GetData.getWord("Enter last name");
                    Name n = new Name(first, last);
 
					// Create address object
                    String street = GetData.getWord("Enter street");
                    String city = GetData.getWord("Enter city");
                    String state = GetData.getWord("Enter state");
                    String zip = GetData.getWord("Enter zip");
                    Address addr = new Address(street, city, state, zip);
 
					// Get student id
                    String id =  GetData.getWord("Enter id number");
 
                     // Create Course object
                    Courses crse = new Courses();
                    int option =  GetData.getInt("Ready to add courses?\n1. Yes\n2. No");
                    if(option == 1)
                    	addCourse(crse);
 
                    // Create student object
                    Student s = new Student(n, addr, id, crse);
 
                   // Add student object to the database
                    db.add(s);
 
                break;
                case 2: //Existing student
                    int enter = GetData.getInt("Want to add course?\n1. Yes\n2. No");
 
                break;
                case 3: // Existing student
                    int drop = GetData.getInt("Want to drop a course?\n1. Yes\n2. No");
 
                break;
                case 4: // Existing student
                    int drp = GetData.getInt("Want to drop a student?\n1. Yes\n2. No");
 
                break;
                case 5: // Display information - current OR dropped
					int displ = GetData.getInt("Show\n1. Current student\n2. Dropped students");
                break;
                case 6: // Modify student's record
 
                break;
                case 7: // End process
                    more = false;
                break;
                default:
					// Do nothing
                break;
            }
        }
    }
    static void addCourse(Courses crse)
    {
          boolean addAnotherCourse = true;
          while(addAnotherCourse)
          {
                int enter = GetData.getInt("Do you want to add course?\n1. Yes\n2. No");
                switch(enter)
                {
                    case 1:
                          String course = GetData.getWord("Enter name of course");
                          if (!(crse.add(course)))
                          {
                              display("Can't add any more course", "Cousre Limit Reached", JOptionPane.WARNING_MESSAGE);
                              addAnotherCourse = false;
                          }
                   break;
                   case 2:
                       addAnotherCourse = false;
                   break;
                   default:
 
                   break;
               }
          }
    }
     static void display(String msg, String title, int type)
    {
        JOptionPane.showMessageDialog(null, msg,title, type );
    }
}

--- Update ---

need help completing the methods

which code is the one you did

I just need help figuring out the incompleted methods, especially the test class

Originally Posted by forgiveme502

I just need help figuring out the incompleted methods, especially the test class

What are you stuck on? (Take this one problem at a time)
Be specific in where you are stuck, things like "I am stuck" or "I need help" does not explain what the underlying problem is.