public class student
{
    public final String name;
    public int id;   //  700 number
    private double gpa;
    private int year;  // 0=freshman, 1= sophomore, etc...
    public student(String n, int i, double g, int y)
    { name=n; gpa=g; year=y; id = i; }
    public String toString()
    { String s;
      switch (year)
	  {
	    case 0 : s="freshman"; break;
	    case 1 : s="sophomore"; break;
	    case 2 : s="junior"; break;
  	    case 3 : s="senior"; break;
  	    default : s="unknown";
	  } //switch
      return name+" is a "+s+" and has a gpa of "+gpa;
    }// toString

    public student tail = null; // pointer to next student

} // student