Util { public static <T> T assertNotNull(T value, String message) { if (value == null) { throw new IllegalArgumentException(message); } return value; } private  Util(); static String generateUUID(); static String generateDbUUID(); static Set<T> asSet(T... values); static Date tomorrow(); static Date yesterday(); static Date midnight(); static Date addDaysToDt(int dayField); static Date addMinutesToDt(int minuteField); static Date toDate(String dt); static T assertNotNull(T value, String message); static boolean equals(String str, String str1); static void closeSafely(Object closable, String msg); static String capitalize(String str); static long generateUniqueLong(); static String toBase64(byte[] data); static SimpleDateFormat getUTCDateFormat(); static String readFile(InputStream is); static String hash(String password); static String toJson(Object anObject); static T fromJson(String json, Class<T> clazz); @SuppressWarnings("rawtypes") static String getClassName(Class c); static String getClassName(String fullClassName); static String reverseEndian(String in); static String transformUuid(String uuid); static List<String> getPossibleUuids(String... ids); static boolean isUuid(String uuid); static String collectionToString(Collection c); static boolean collectionsAreEqual(Collection<T> c1, Collection<T> c2); static boolean collectionsAreEqual(Collection<T> c1, Collection<T> c2, Comparator<T> comp); static String getHostname(); static final String UTC_STR; }
@Test public void testAssertNotNullException() { try { Util.assertNotNull(null, "message text"); } catch (IllegalArgumentException e) { assertEquals("message text", e.getMessage()); } }
@Test public void testAssertNotNull() { Integer one = Integer.valueOf(1); Integer daone = Util.assertNotNull(one, "shouldn't see this"); assertNotNull(daone); assertEquals(one, daone); }