code: public int readInteger(int defaultValue, String attribute)
      {
          return Integer.parseInt(getValue(String.valueOf(defaultValue), attribute));
      }
docs: Read an integer.
  
  @param defaultValue The value returned if attribute not found.
  @param attribute The integer name (must not be <code>null</code>).
  @return The integer value.
  @throws LionEngineException If invalid argument.