code: public static String capitalizeFirst( String s )
      {
          if (StringUtil.isEmpty( s )) return s;
  
          StringBuilder sb = new StringBuilder();
          sb.append( s.substring( 0, 1 ).toUpperCase() );
          sb.append( s.substring( 1 ) );
          return sb.toString();
      }
docs: <p>capitalizeFirst.</p>
  
  @param s a {@link java.lang.String} object.
  @return a {@link java.lang.String} object.