Old School Loader

import java.applet.Applet;
import java.applet.AppletContext;
import java.applet.AppletStub;
import java.net.*;
import java.io.*;
import java.util.*;
import javax.swing.*;

/**
 * @author Parnassian, Nissan Nut
 */
public class OldSchoolLoader extends JFrame implements AppletStub {

        private static final long serialVersionUID = 0001;

        private static final HashMap<String, String> params = new HashMap<String, String>();
        final String baseLink = "http://oldschool70.runescape.com/";
        private Applet loader;

        public OldSchoolLoader() {
                setTitle("Nissan Nut's Old School (2007) Runescape loader");
                setSize(768, 530);
                setVisible(true);
                setResizable(false);
                setDefaultCloseOperation(EXIT_ON_CLOSE);
                try {
                        downloadFile(getUrl());
                        ClassLoader clientClassLoader = new URLClassLoader(
                                        new URL[] { new File("Loader.jar").toURL() });
                        Class<?> clientClass = clientClassLoader.loadClass("client");
                        loader = (Applet) clientClass.newInstance();
                        loader.setStub(this);
                        loader.init();
                        loader.start();
                        JPopupMenu.setDefaultLightWeightPopupEnabled(false);
                        add(loader);
                } catch (Exception e) {
                        e.printStackTrace();
                }
                setVisible(true);
        }

        public void appletResize(int width, int height) {
        }

        public final URL getCodeBase() {
                try {
                        return new URL(baseLink);
                } catch (Exception e) {
                        return null;
                }
        }

        public final URL getDocumentBase() {
                try {
                        return new URL(baseLink);
                } catch (Exception e) {
                        return null;
                }
        }

        public final String getParameter(String name) {
                return params.get(name);
        }

        public final AppletContext getAppletContext() {
                return null;
        }

        public static void main(String[] args) {
                try {
                        new OldSchoolLoader();
                } catch (Exception e) {
                        throw new RuntimeException(e);
                }
        }



        void addParam(final String str1) {
                addParam(str1, "");
        }

        void addParam(final String str1, final String str2) {
                params.put(str1, str2);
        }

        String getUrl() throws Exception {
                return baseLink + params.get("archive");
        }

        void downloadFile(final String url) {
                try {
                        BufferedInputStream in = new java.io.BufferedInputStream(new URL(
                                        url).openStream());
                        FileOutputStream fos = new java.io.FileOutputStream("Loader.jar");
                        BufferedOutputStream bout = new BufferedOutputStream(fos, 1024);
                        byte[] data = new byte[1024];
                        int x = 0;
                        while ((x = in.read(data, 0, 1024)) >= 0) {
                                bout.write(data, 0, x);
                        }
                        bout.close();
                        in.close();
                } catch (Exception e) {
                        return;
                }
        }

}