[lockmac]

Hi. I am reasonably new to Java but know the basics. I am just wandering if i could get some small help...

I am creating an Enrolment System for a University (its my assignment) and I have a class called Unit, and a class called Enrolment. In the Enrolment class, I am writing a method for the user to create a new Unit, but I have the following problem, which might be hard to explain.

Here is some of the code from the top...

Code:

import java.util.ArrayList;
import java.util.Scanner;
public class Enrolment
{
	Scanner scanner = new Scanner(System.in);
	private ArrayList<Unit> units;
	
	public Enrolment()
	{
		units = new ArrayList<Unit>();
	}

and here is the code from where I actually create the unit once I have the information from the user...

Code:

Unit 1005 = new Unit(name,code,sem1,sem2);
units.add(1005);

My question is... where it says '1005' (the name of the instance of Unit that I create)... is their a way so that it will change with every new unit? Perhaps so it will be the name of a variable, such as 'code'?? I tryed something like...

Code:

Unit code = new Unit(....)

but obviously that just created it called 'code'.

Just wandering what ways are their of making this change everytime a new instance is created.

Thanks for your help