private static Student[] feld = null;
    private static ArrayList<Student> liste = null;

    @BeforeEach
    public void beforeEach() {
        System.out.println("beforeEach");
        feld= new Student[]  {
                new Student("Meier","Jürgen",1234,1.7f),
                new Student("Meier","Andrea",1254,2.7f),
                new Student("Meier","Manfread",2234,3.7f),
                new Student("Brandt","Susanne",333,2.0f),  // half devil
                new Student("Brandtner","Susanne",336,3.0f),
                new Student("Brandt","Beate",323,4.0f),
        };
        liste = new ArrayList<>(100);
        Collections.addAll(liste, feld);
    }