/*
  Author:  James Tam
  Version: 2015

  Learning objective: having a potential pitfall of using bidirectional
  references illustrated. (JT's hint: if you can't figure out what the
  problem is then add a print() output instructor to the Teacher and
  Student constructors.
*/
public class Driver
{
    public static void main(String [] args)
    {
        // Could start with either a teacher or student, doesn't matter
        Student s = new Student();
        System.out.println("<< DEBUG: This message will never appear >>");
    }
}