@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((etudiant == null) ? 0 : etudiant.hashCode());
result = prime * result + ((module == null) ? 0 : module.hashCode());
result = prime * result + ((prof == null) ? 0 : prof.hashCode());
return result;
}
