/* File Name: StudentList.java
 *
 * Purpose: Main class which runs the program
 *
 * Name: Haresh Modha
 *
 * Instructor: Leonidas Deligiannidis, Ph.D.
 */
 

public class StudentList 
{
	private StudentNode list;
	
	/*
	 * Sets up an initially empty list of students
	 */
	public StudentList()
	{
		list = null;
	}
	
	/*
	 * Creates a new StudentNode object and adds it to the end of the linked list
	 */
	public void add (Student stu)
	{
		StudentNode node = new StudentNode (stu);
		StudentNode current;
		
		if (list == null)
		{
			list = node;
		}
		else
		{
			current = list;
			while (current.next != null)
			{
				current = current.next;
			}
			current.next = node;
		}
	}
	
	/*
	 * Returns this list of students as a string
	 */
	public String toString ()
	{
		String result = "";
		
		StudentNode current = list;
		
		while (current != null)
		{
			result += current.student + "\n";
			current = current.next;
		}
		
		return result;
	}
	
	/*
	 * An inner class that represents a node in the student list.
	 * The public variables are accessed by the StudentList class.
	 */
	private class StudentNode
	{
		public Student student;
		public StudentNode next;
		
		//Sets up the node
		public StudentNode (Student stu)
		{
			student = stu;
			next = null;
		}
	}
}