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copied!<p>In iReport 3.7.6 you can just check "Show Labels" box under BarPlot properties. </p> <p>In a prior version (3.1.4), I had to create a ChartCustomizer class.</p> <p>If you need to format the number in the label (e.g. to Percentage, add thousands separator, etc), then you definitely need a ChartCustomizer, even in the new version.</p> <p>A simple example: </p> <pre><code>import java.text.NumberFormat; import net.sf.jasperreports.engine.JRChart; import net.sf.jasperreports.engine.JRChartCustomizer; import org.jfree.chart.JFreeChart; import org.jfree.chart.labels.AbstractCategoryItemLabelGenerator; import org.jfree.chart.labels.CategoryItemLabelGenerator; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.renderer.category.BarRenderer; import org.jfree.chart.renderer.category.CategoryItemRenderer; import org.jfree.data.category.CategoryDataset; public class SimpleBarChartCustomizer implements JRChartCustomizer { public void customize(JFreeChart chart, JRChart jasperChart) { CategoryPlot plot = chart.getCategoryPlot(); BarRenderer renderer = (BarRenderer) plot.getRenderer(); CategoryItemRenderer catRenderer = ((CategoryItemRenderer)renderer); catRenderer.setBaseItemLabelGenerator(new NumberLabelGenerator("", NumberFormat.getInstance())); } static class NumberLabelGenerator extends AbstractCategoryItemLabelGenerator implements CategoryItemLabelGenerator { public NumberLabelGenerator(String labelFormat, NumberFormat formatter, NumberFormat percentFormatter) { super(labelFormat, formatter, percentFormatter); } protected NumberLabelGenerator(String labelFormat, NumberFormat formatter) { super(labelFormat, formatter); } private NumberFormat formatter = NumberFormat.getInstance(); public String generateLabel(CategoryDataset dataset, int series, int category) { Number b = dataset.getValue(series, category); formatter.setMaximumFractionDigits(2); return formatter.format(b); } } } </code></pre>

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