import org.math.plot.*;... double[] x = ... double[] y = ... // create your PlotPanel (you can use it as a JPanel) Plot2DPanel plot = new Plot2DPanel(); // add a line plot to the PlotPanel plot.addLinePlot("my plot", x, y); // put the PlotPanel in a JFrame, as a JPanel JFrame frame = new JFrame("a plot panel"); frame.setContentPane(plot); frame.setVisible(true);