### Question:
StringUtils { public static String groupName(String name) { String groupName = convertToCamelCase(name); if (isAlpha(groupName.charAt(0)) && Character.isLowerCase(groupName.charAt(0))) { char[] chars = groupName.toCharArray(); chars[0] = Character.toUpperCase(chars[0]); return new String(chars); } return groupName; } StringUtils(); static boolean isEmpty(String string); static String clean(String string); static boolean isAlpha(Character c); static String getBeanName(String queueName); static String convertToCamelCase(String string); static String groupName(String name);  }### Answer:
@Test public void groupName() { assertEquals("Url", StringUtils.groupName("URL")); assertEquals("JobQueue", StringUtils.groupName("job-Queue")); assertEquals("JobQueue", StringUtils.groupName("Job-Queue")); assertEquals("JobQueue", StringUtils.groupName("JOB-Queue")); assertEquals("JobQueue", StringUtils.groupName(" JOB-Queue ")); assertEquals("JobQueue", StringUtils.groupName(" JOB-1233-Queue ")); assertEquals("JobQuEue", StringUtils.groupName(" JOB-1233-Qu1234eue ")); assertEquals("JobQuEueQueue", StringUtils.groupName(" JOB-1233-Qu1234eueQUEUE ")); assertEquals("1234-1234", StringUtils.groupName(" 1234-1234 ")); assertEquals("JoB", StringUtils.groupName(" joB ")); assertEquals("JB", StringUtils.groupName(" jB ")); }