static data is not reinitialized

One of these tests will fail:

    private static LinkedList list = new LinkedList();   
    
    public void testAdd() {
        String s = "Brooklyn";
        list.add(s);
        Object o = list.getFirst();
        assertEquals(s, o); 
    }
    
    public void testSizeAfterAddingOneElementIsOne() {
        String s = "New York";
        list.add(s);
        assertEquals(1, list.size());
    }