### Question:
TempletonUtils { public static boolean isset(String s) { return (s != null) && (s.length() > 0); }  static boolean isset(String s); static boolean isset(char ch); static boolean isset(T[] a); static boolean isset(Collection<T> col); static boolean isset(Map<K, V> col); static String extractPercentComplete(String line); static String extractChildJobId(String line); static String encodeArray(String[] plain); static String encodeArray(List<String> list); static String[] decodeArray(String s); static String[] hadoopFsListAsArray(String files, Configuration conf,
                                               String user); static String hadoopFsListAsString(String files, Configuration conf,
                                              String user); static String hadoopFsFilename(String fname, Configuration conf, String user); static boolean hadoopFsIsMissing(FileSystem fs, Path p); static Path hadoopFsPath(String fname, Configuration conf, String user); static int fetchUrl(URL url); static Map<String, String> hadoopUserEnv(String user,
                                                    String overrideClasspath); static final Pattern JAR_COMPLETE; static final Pattern PIG_COMPLETE; static final Pattern JAR_ID; static final Pattern PIG_ID; static final Pattern[] ID_PATTERNS; }### Answer:
@Test public void testIssetString() { Assert.assertFalse(TempletonUtils.isset((String)null)); Assert.assertFalse(TempletonUtils.isset("")); Assert.assertTrue(TempletonUtils.isset("hello")); }
@Test public void testIssetTArray() { Assert.assertFalse(TempletonUtils.isset((Long[]) null)); Assert.assertFalse(TempletonUtils.isset(new String[0])); String[] parts = new String("hello.world").split("\\."); Assert.assertTrue(TempletonUtils.isset(parts)); }