Converting an array program to ArrayList

[Adomini]

Good morning world! I am trying to edit an array code and make it into an ArrayList code instead. I have both codes, and I am trying to finish it, but I am getting an error...... I am sorry for the long post - I will post the regular array code, then what I have, and then the errors. Long post, but if you could help me define the error, I would appreciate it. Here goes.....

public class Course
{
	public final int CAPACITY = 10;
	
	private String courseName;

	private String[] students;

	private int numberOfStudents;

	/**
	 * precondition courseName is not null
	 * @param courseName
	 * postcondition: empty course has been create
	 * @throws IllegalArgumentException if courseName is null
	 */
	public Course(String courseName)
	{
		if (courseName == null)
			throw new IllegalArgumentException ("null course name");
		this.courseName = courseName;
		students = new String[CAPACITY];
		numberOfStudents = 0;
	}

	/**
	 * precondition: course is not full
	 * @param student
	 * postcondition: student has been added to the course
	 * @throws IllegalArgumentException if course is full
	 */
	public void addStudent(String student)
	{
		if (numberOfStudents == CAPACITY)
			throw new IllegalArgumentException ("course is full");
		students[numberOfStudents] = student;
		numberOfStudents++;
	}

	/**
	 * @return
	 */
	public String[] getStudents()
	{
		return students;
	}

	/**
	 * @return
	 */
	public int getNumberOfStudents()
	{
		return numberOfStudents;
	}

	/**
	 * @return
	 */
	public String getCourseName()
	{
		return courseName;
	}

	/**
	 * precondition: student is in the course
	 * @param student
	 * postcondition: student has been dropped from the course
	 * @throws IllegalArgumentException if student is not in the course
	 */
	public void dropStudent(String student)
	{
		
	}
}

Now, MY CONVERSION SO FAR

import java.util.ArrayList;

public class Course
{
	public final int CAPACITY = 10;
	
	private String courseName;
	
	private ArrayList<String> students  = new ArrayList();

	private int numberOfStudents;

	/**
	 * precondition courseName is not null
	 * @param courseName
	 * postcondition: empty course has been create
	 * @throws IllegalArgumentException if courseName is null
	 */
	public Course(String courseName)
	{
		if (courseName == null)
			throw new IllegalArgumentException ("null course name");
		
		this.courseName = courseName;
		
		
		ArrayList<String> CAPACITY = new ArrayList();
		
		numberOfStudents = 0;
	}

	

	/**
	 * @return
	 */
	public ArrayList<String> getStudents()
	{
		return students;
	}

	/**
	 * @return
	 */
	public int getNumberOfStudents()
	{
		return numberOfStudents;
	}

	/**
	 * @return
	 */
	public String getCourseName()
	{
		return courseName;
	}

	/**
	 * precondition: student is in the course
	 * @param student
	 * postcondition: student has been dropped from the course
	 * @throws IllegalArgumentException if student is not in the course
	 */
	public void dropStudent(String student)
	{
		
	}

	
	/**
	 * precondition: course is not full
	 * @param student
	 * postcondition: student has been added to the course
	 * @throws IllegalArgumentException if course is full
	 */
	
	public void addStudent(String string) 
	{
		if (numberOfStudents == CAPACITY)
			throw new IllegalArgumentException ("course is full");
		
		
		numberOfStudents++;
		
	}
}

and the errors.......

actual:                                 expected:
 new java.util.ArrayList:1(){}.......... new Object[10](){
                                          [0]  "bubba",
                                          [1]  "aaa",
                                          [2]  "bbb",
                                          [3]  "ccc",
                                          [4]  "ddd",
                                          [5]  "eee",
                                          [6]  "fff",
                                          [7]  "hhh",
                                          [8]  "iii",
                                          [9] null}

[RamyaSivakanth]

Don't expect anyone to correct your errors.

Try your own .

IOn ArrayList conversion code ,you have only empty methods..no logic.

[Adomini]

Good morning Ramya. My first comment was that I am looking for help on seeing where the error was/ defining it, and I would work on it. I do not recall mentioning that I was asking for a free hand here. I do this every now and then (asking for input) - no one else seems to mind on giving me pointers (which is the point of a forum).

Thanks for your input on the logic.

[Ronin]

Adomini,

Drop the following code from the Course constructor, it is conflicting with the final integer of the same name.

ArrayList<String> CAPACITY = new ArrayList();

Regards.

[Adomini]

Thank you! I will do that.

Have a good rest of the day.

Brandon