JAVA image zoom in/out

Hi Friend,

Try the following code:

import java.awt.* ;
import org.jfree.ui.*;
import org.jfree.data.*;
import org.jfree.chart.*;
import org.jfree.data.xy.*;
import org.jfree.chart.plot.*;
public class Chart extends ApplicationFrame {
private ChartPanel chartPanel;
public Chart(String title) {
super(title);
XYSeries series = new XYSeries("Marks");
series.add(1, 80);
series.add(2, 75);
series.add(3, 70);
series.add(4, 90);
XYDataset xyDataset = new XYSeriesCollection(series);
JFreeChart chart = ChartFactory.createXYLineChart
("XYLine Chart using JFreeChart", "ID", "Marks",
xyDataset, PlotOrientation.VERTICAL, true, true, false);

chartPanel = new ChartPanel(chart);
chartPanel.setHorizontalAxisTrace(true);
chartPanel.setVerticalAxisTrace(true);
chartPanel.setPreferredSize(new java.awt.Dimension(400, 270));
setContentPane(chartPanel);
}

public static void main(String [] args) {
Chart demo = new Chart("Mouse Zoom Demo");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);

}
}

Hope that it will be helpful for you.
Thanks

hi...........

but i am getting error in import file.?//////

can u tell me the reason???????