import org.jfree.chart.*;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.xy.*;
import org.jfree.data.*;

public class xyLine{
public static void main(String arg[]){
	XYSeries series = new XYSeries("Average Weight");
	series.add(20.0, 20.0);
	series.add(40.0, 25.0);
	series.add(55.0, 50.0);
	series.add(70.0, 65.0);
	XYDataset xyDataset = new XYSeriesCollection(series);
	JFreeChart chart = ChartFactory.createXYLineChart
		      ("XYLine Chart using JFreeChart", "Age", "Weight", xyDataset, PlotOrientation.VERTICAL, true, true, false);
	ChartFrame frame1=new ChartFrame("XYLine Chart",chart);
	frame1.setVisible(true);
	frame1.setSize(300,300);
	}
}