clase java que herede de applet

[giorgio_83]

este es el codigo completo

Código:

/*
 * JCDWriter.java
 *
 * Created on November 20, 2002, 9:10 AM
 */

package ui;

import javax.swing.*;
import javax.swing.tree.*;
import java.net.InetAddress;
import java.awt.Cursor;
import java.util.ArrayList;
import java.io.*;
import java.awt.*;
import java.awt.event.*;


import model.*;
/**
 *
 * @author  rmallappa
 */
public class JCDWriter extends javax.swing.JFrame implements Runnable {
    
    String pathSeparator = "/";
    Object dragSource;
    
    /** Creates new form JCDWriter */
    public JCDWriter() {
        initComponents();
        initializeDragAndDropMechanism();
        initializeMKISOFS();
        
        initializeCDRECORDConfig();
        initializeApplicationSettings();
    }
    
    private void initComponents() {
        mainPanel = new javax.swing.JPanel();
        hostToVirtualSplitPane = new javax.swing.JSplitPane();
        topComponentPlaceHolder = new javax.swing.JLabel();
        bottomComponentPlaceHolder = new javax.swing.JLabel();
        statusBarPanel = new javax.swing.JPanel();
        statusBar = new javax.swing.JLabel();
        mainMenuBar = new javax.swing.JMenuBar();
        fileMenu = new javax.swing.JMenu();
        newLayout = new javax.swing.JMenuItem();
        loadLayout = new javax.swing.JMenuItem();
        saveLayout = new javax.swing.JMenuItem();
        saveLaoutAs = new javax.swing.JMenuItem();
        jSeparator1 = new javax.swing.JSeparator();
        printMenu = new javax.swing.JMenu();
        printVirtualFileSystemTree1 = new javax.swing.JMenuItem();
        printGraftPoints1 = new javax.swing.JMenuItem();
        jSeparator2 = new javax.swing.JSeparator();
        exit = new javax.swing.JMenuItem();
        editMenu = new javax.swing.JMenu();
        helpMenu = new javax.swing.JMenu();
        preferencesMenuItem = new javax.swing.JMenuItem();
        deleteMenuItem = new javax.swing.JMenuItem();
        insertMenuItem = new javax.swing.JMenuItem();
        aboutMenuItem = new javax.swing.JMenuItem();
        diskMenu = new javax.swing.JMenu();
        scanbusTest = new javax.swing.JMenuItem();
        recordFromISOImage = new javax.swing.JMenuItem();
        blankCD = new javax.swing.JMenuItem();
        createCDImage = new javax.swing.JMenuItem();
        calculateFileSystemSize = new javax.swing.JMenuItem();
        recordDirectly = new javax.swing.JMenuItem();
        
        setTitle("JCDWriter");
        setName("mainFrame");
        addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowOpened(java.awt.event.WindowEvent evt) {
                formWindowOpened(evt);
            }
            public void windowClosing(java.awt.event.WindowEvent evt) {
                exitForm(evt);
            }
        });

lo envio en dos trozos que si no no me cabe