### Question:
UuidUtil { public static String stripHyphens(String uuid) { return uuid.replaceAll("-", ""); } private  UuidUtil(); static String insertHyphens(String uuidWithoutHyphens); static String stripHyphens(String uuid); static boolean isValidUUID(String uuid);  }### Answer:
@Test public void stripHyphensTest() { Assert.assertEquals("9aa395cb8e914e77aeaf1a41d85bffa8", UuidUtil.stripHyphens("9aa395cb-8e91-4e77-aeaf-1a41d85bffa8")); }