zk 5.0.9 CE and bar-charts

<?page title="Auto Generated index.zul"?>
<window title="Hello World!!" border="normal" width="500px" apply="zk509.ChartCtrl">

<image id="myimage" />

</window>

package zk509;

import java.awt.image.BufferedImage;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.encoders.EncoderUtil;
import org.jfree.chart.encoders.ImageFormat;
import org.jfree.chart.plot.PiePlot3D;
import org.jfree.data.general.DefaultPieDataset;
import org.zkoss.image.AImage;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.util.GenericForwardComposer;
import org.zkoss.zul.Image;

public class ChartCtrl extends GenericForwardComposer{
	private Image myimage;
	
	public void doAfterCompose(Component comp) throws Exception {
		super.doAfterCompose(comp);

		DefaultPieDataset pieDataset = new DefaultPieDataset();
		pieDataset.setValue("C/C++", new Double(17.5));
		pieDataset.setValue("PHP", new Double(32.5));
		pieDataset.setValue("Java", new Double(43.2));
		pieDataset.setValue("Visual Basic", new Double(10));
		
		JFreeChart chart = ChartFactory.createPieChart3D("Sample Pie Chart 3D", pieDataset,true,true,true);
		PiePlot3D plot = (PiePlot3D) chart.getPlot();
		plot.setForegroundAlpha(0.5f);
		BufferedImage bi = chart.createBufferedImage(500, 300, BufferedImage.TRANSLUCENT , null);
		byte[] bytes = EncoderUtil.encode(bi, ImageFormat.PNG, true);
		
		AImage image = new AImage("Pie Chart", bytes);
		myimage.setContent(image);
	}
}