EqualityUtils { public static boolean isDifferent(Object o1, Object o2) { return !isEqual(o1, o2); } private  EqualityUtils(); static boolean isDifferent(Object o1, Object o2); static boolean isDifferent(T[] array1, T[] array2); static boolean isEqual(Object o1, Object o2); static boolean isEqual(T[] array1, T[] array2);  }
@Test public void isDifferentArrayTest() { assertTrue(EqualityUtils.isDifferent(new Object[]{""}, new Object[]{"A"})); }
@Test public void isDifferentArrayFalseTest() { assertFalse(EqualityUtils.isDifferent(new Object[]{""}, new Object[]{""})); }