sclass JLineHeightTextArea > JTextArea {
  double lineHeightFactor = 1.0;
  
  *() {}
  *(double *lineHeightFactor) {}
  
  @Override
  public FontMetrics getFontMetrics(Font font) {
      return new FontMetricsWrapper(super.getFontMetrics(font)) {
          @Override
          public int getHeight() {
            return iround(super.getHeight()*lineHeightFactor);
          }
      };
  }

}