code: public void setMultiplier (int newValue) {
          multiplier = newValue;
          bigDecimalMultiplier = null;
          bigIntegerMultiplier = null;
          fastPathCheckNeeded = true;
      }
docs: Sets the multiplier for use in percent, per mille, and similar
  formats.
  For a percent format, set the multiplier to 100 and the suffixes to
  have '%' (for Arabic, use the Arabic percent sign).
  For a per mille format, set the multiplier to 1000 and the suffixes to
  have '&#92;u2030'.
  
  <P>Example: with multiplier 100, 1.23 is formatted as "123", and
  "123" is parsed into 1.23.
  
  @param newValue the new multiplier
  @see #getMultiplier