protected void addSubTitle(JFreeChart chart, String subTitle, Font font)
	{
		if (StringUtils.isNotEmpty(subTitle))
		{
			TextTitle chartSubTitle = new TextTitle(subTitle);
			customizeTitle(chartSubTitle, font);
			chart.addSubtitle(chartSubTitle);
		}
	}
protected void addSubTitle ( JFreeChart chart , String subTitle , Font font ) { if ( StringUtils . isNotEmpty ( subTitle ) ) { TextTitle chartSubTitle = new TextTitle ( subTitle ) ; customizeTitle ( chartSubTitle , font ) ; chart . addSubtitle ( chartSubTitle ) ; } }
<p>addSubTitle.</p>

@param chart a {@link org.jfree.chart.JFreeChart} object.
@param subTitle a {@link java.lang.String} object.
@param font a {@link java.awt.Font} object.