public class Student extends Person {
    int matnr;
    Student(long svnum, String name, int matnr) {
        super(svnum,name);
        this.matnr=matnr;
    }
    public static void print(Student s)
    {
        Person.print(s);
        System.out.print(" Mat-Nr.:");
        System.out.print(s.matnr);
    }
    public final void printStudent()
    {
        printPerson();
        System.out.print(" Mat-Nr.:");
        System.out.print(matnr);
    }
    public void print()
    {
        this.printStudent();
    }
}