import java.awt.*;import java.applet.*;import java.net.URL;import graph.*;/*****************************************************************************    Applet example1**                                              Version 1.0   January 1996******************************************************************************    Copyright (C) 1996 Leigh Brookshaw****    This program is free software; you can redistribute it and/or modify**    it under the terms of the GNU General Public License as published by**    the Free Software Foundation; either version 2 of the License, or**    (at your option) any later version.****    This program is distributed in the hope that it will be useful,**    but WITHOUT ANY WARRANTY; without even the implied warranty of**    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the**    GNU General Public License for more details.****    You should have received a copy of the GNU General Public License**    along with this program; if not, write to the Free Software**    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.******************************************************************************    This is a simple applet that demonstrates how to use the basic features**    of the Plotting Class library. The data is calculated locally by**    the applet***************************************************************************/public class example1 extends Applet {      Graph2D graph;      DataSet data1;      DataSet data2;      Axis    xaxis;      Axis    yaxis_left;      Axis    yaxis_right;      double data[];      int np = 100;      URL markerURL;      public void init() {        int i;        int j;        double data[] = new double[2*np];/***      Get the passed parameters*/        String mfile    = getParameter("MARKERS");/***      Create the Graph instance and modify the default behaviour*/        graph = new Graph2D();        graph.drawzero = false;        graph.drawgrid = false;        graph.borderTop = 50;/***      Load a file containing Marker definitions*/        try {           markerURL = new URL(getDocumentBase(),mfile);           graph.setMarkers(new Markers(markerURL));        } catch(Exception e) {           System.out.println("Failed to create Marker URL!");        }        setLayout( new BorderLayout() );        add("Center", graph);/***      Calculate the first data Set.*/        for(i=j=0; i<np; i++,j+=2) {            data[j] = j-np;            data[j+1] = 60000 * Math.pow( ((double)data[j]/(np-2) ), 2);        }        data1 = graph.loadDataSet(data,np);        data1.linestyle = 0;        data1.marker    = 1;        data1.markerscale = 1.5;        data1.markercolor = new Color(0,0,255);        data1.legend(200,100,"y=6x10{^4}x^2");        data1.legendColor(Color.black);/***      Calculate the Second data Set.*/        for(i=j=0; i<np; i++,j+=2) {            data[j] = j-np;            data[j+1] = Math.pow( ((double)data[j]/(np-2) ), 3);        }        data2 = graph.loadDataSet(data, np);        data2.linecolor   =  new Color(0,255,0);        data2.marker      = 3;        data2.markercolor = new Color(100,100,255);        data2.legend(200,120,"y=x^3");        data2.legendColor(Color.black);/***      Attach both data sets to the Xaxis*/        xaxis = graph.createAxis(Axis.BOTTOM);        xaxis.attachDataSet(data1);        xaxis.attachDataSet(data2);        xaxis.setTitleText("Xaxis");        xaxis.setTitleFont(new Font("TimesRoman",Font.PLAIN,20));        xaxis.setLabelFont(new Font("Helvetica",Font.PLAIN,15));/***      Attach the first data set to the Left Axis*/        yaxis_left = graph.createAxis(Axis.LEFT);        yaxis_left.attachDataSet(data1);        yaxis_left.setTitleText("y=6x10{^4}x^2");        yaxis_left.setTitleFont(new Font("TimesRoman",Font.PLAIN,20));        yaxis_left.setLabelFont(new Font("Helvetica",Font.PLAIN,15));        yaxis_left.setTitleColor( new Color(0,0,255) );/***      Attach the second data set to the Right Axis*/        yaxis_right = graph.createAxis(Axis.RIGHT);        yaxis_right.attachDataSet(data2);        yaxis_right.setTitleText("y=x^3");        yaxis_right.setTitleFont(new Font("TimesRoman",Font.PLAIN,20));        yaxis_right.setLabelFont(new Font("Helvetica",Font.PLAIN,15));        yaxis_right.setTitleColor(new Color(100,100,255) );      }}