code: public static String join(final Object[] array, final String prefix,
              final String separator, final String suffix)
     {
        return join(new StringBuffer(), array, prefix, separator, suffix);
     }
docs: Return a string composed of the given array.
  
  @param array Array of objects.
  @param prefix String prefix.
  @param separator Element sepearator.
  @param suffix String suffix.
  @return String in the format of: prefix + n ( + separator + n+i)* + suffix.