code: private String ljust(String s, Integer length) {
  		if (s.length() >= length) {
  			return s;
  		}
  		length -= s.length();
  		StringBuffer sb = new StringBuffer();
  		for (Integer i = 0; i < length; i++) {
  			sb.append(" ");
  		}
  		return s + sb.toString();
  	}
docs: Left justify a string by forcing it to be the specified length. This is
  done by concatonating space characters to the end of the string until the
  string is of the specified length. If, however, the string is initially
  longer than the specified length then the original string is returned.
  
  @param s
  A string.
  @param length
  The target length for the string.
  @return A left-justified string.