public ClassRoom(Pupil pupil_1, Pupil pupil_2, Pupil pupil_3, Pupil pupil_4) { pupils = new Pupil[] { pupil_1, pupil_2, pupil_3, pupil_4 }; }
public ClassRoom(Pupil pupil_1, Pupil pupil_2) { pupils = new Pupil[] { pupil_1, pupil_2 }; }