Java tutorial
package org.jfree.chart.demo; import java.awt.Color; import java.awt.Dimension; import java.awt.Font; import java.text.NumberFormat; import javax.swing.JPanel; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.CategoryAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.labels.ItemLabelAnchor; import org.jfree.chart.labels.ItemLabelPosition; import org.jfree.chart.labels.StandardCategoryItemLabelGenerator; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.renderer.category.CategoryItemRenderer; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; import org.jfree.ui.TextAnchor; public class ItemLabelDemo3 extends ApplicationFrame { private static final long serialVersionUID = 1L; public ItemLabelDemo3(String s) { super(s); JPanel jpanel = createDemoPanel(); jpanel.setPreferredSize(new Dimension(500, 270)); setContentPane(jpanel); } private static CategoryDataset createDataset() { DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset(); defaultcategorydataset.addValue(51D, "Series 1", "Apples"); defaultcategorydataset.addValue(44.299999999999997D, "Series 1", "Bananas"); defaultcategorydataset.addValue(93D, "Series 1", "Oranges"); defaultcategorydataset.addValue(35.600000000000001D, "Series 1", "Pears"); defaultcategorydataset.addValue(75.099999999999994D, "Series 1", "Plums"); return defaultcategorydataset; } private static JFreeChart createChart(CategoryDataset categorydataset) { JFreeChart jfreechart = ChartFactory.createBarChart("Item Label Demo 3", "Category", "Value", categorydataset, PlotOrientation.VERTICAL, false, true, false); jfreechart.setBackgroundPaint(Color.white); CategoryPlot categoryplot = (CategoryPlot) jfreechart.getPlot(); categoryplot.setBackgroundPaint(Color.lightGray); categoryplot.setDomainGridlinePaint(Color.white); categoryplot.setRangeGridlinePaint(Color.white); CategoryAxis categoryaxis = categoryplot.getDomainAxis(); categoryaxis.setVisible(false); NumberAxis numberaxis = (NumberAxis) categoryplot.getRangeAxis(); numberaxis.setUpperMargin(0.14999999999999999D); CategoryItemRenderer categoryitemrenderer = categoryplot.getRenderer(); StandardCategoryItemLabelGenerator standardcategoryitemlabelgenerator = new StandardCategoryItemLabelGenerator( "{1}", NumberFormat.getInstance()); categoryitemrenderer.setBaseItemLabelGenerator(standardcategoryitemlabelgenerator); categoryitemrenderer.setBaseItemLabelFont(new Font("SansSerif", 0, 12)); categoryitemrenderer.setBaseItemLabelsVisible(true); categoryitemrenderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.CENTER, TextAnchor.CENTER, TextAnchor.CENTER, -1.5707963267948966D)); return jfreechart; } public static JPanel createDemoPanel() { JFreeChart jfreechart = createChart(createDataset()); return new ChartPanel(jfreechart); } public static void main(String args[]) { ItemLabelDemo3 itemlabeldemo3 = new ItemLabelDemo3("Item Label Demo 3"); itemlabeldemo3.pack(); RefineryUtilities.centerFrameOnScreen(itemlabeldemo3); itemlabeldemo3.setVisible(true); } }