Duvidas com o Swing JTabbedPane e textArea POR FAVOR ME AJUDEM

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package notepad;

/**
 *
 * @author Jonas
 */
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;

public class Content extends JFrame implements ActionListener {

    JTabbedPane jtp;
    JOptionPane jopane;
    JFileChooser fChooser;
    JMenuBar menuBar;
    JMenu file;
    JMenuItem novo;
    JMenuItem open;
    JMenuItem save;
    JMenuItem saveAs;
    JScrollPane scrollPane;
    JPanel panel;
    String fileSaved;
    boolean fileIsSaved;

    public Content() {
        fileIsSaved = false;
        jopane = new JOptionPane();
        fChooser = new JFileChooser();

        menuBar = new JMenuBar();
        file = new JMenu("File");
        novo = new JMenuItem("New");
        open = new JMenuItem("Open..");
        save = new JMenuItem("Save");
        saveAs = new JMenuItem("SaveAs..");

        panel = new JPanel();
        jtp = new JTabbedPane();

        






        file.setFont(new Font("Verdana", 10, 10));
        file.addActionListener(this);
        novo.setFont(new Font("Verdana", 10, 10));
        novo.addActionListener(this);
        open.setFont(new Font("Verdana", 10, 10));
        open.addActionListener(this);
        save.setFont(new Font("Verdana", 10, 10));
        save.addActionListener(this);
        saveAs.setFont(new Font("Verdana", 10, 10));
        saveAs.addActionListener(this);
        if (!fileIsSaved) {
            save.setEnabled(false);
        }




        file.insert(novo, 0);
        file.insert(open, 1);
        file.insertSeparator(2);
        file.insert(save, 3);
        file.insert(saveAs, 4);
        file.insertSeparator(5);



        menuBar.add(file);


        this.setTitle("Jonhkr Editor");
        this.setLayout(new BorderLayout());

        this.add(menuBar, BorderLayout.NORTH);
        this.add(jtp, BorderLayout.CENTER);


        this.add(panel, BorderLayout.SOUTH);
        this.resize(1024, 700);

        this.setDefaultCloseOperation(EXIT_ON_CLOSE);





    }

    public static void main(String[] args) {
        JFrame window = new Content();
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.show();
    }

    public void actionPerformed(ActionEvent e) {
        Object obj = e.getSource();
        if (obj.equals(novo)) {
           
            
           
                this.setTitle("Jonhkr Editor");
                jtp.addTab("[untitled.txt]", new JScrollPane(new JTextArea()));
             System.out.print(jtp);
             
            
        }
        if (obj.equals(open)) {
            
            fChooser.showOpenDialog(this);
            try {
                String content = JFileWriter.open(fChooser.getSelectedFile());
                this.setTitle("Jonhkr Editor");
                jtp.addTab(fChooser.getSelectedFile().getName(), new JScrollPane(new JTextArea(content)));
                
               

            } catch (IOException ex) {
                System.out.print(ex.toString());
            }
             
           
          
            
        }
        if (obj.equals(saveAs)) {
            fChooser.setDialogTitle("Save as..");
            fChooser.showSaveDialog(this);

            System.out.print(fChooser.getSelectedFile());
            if (fChooser.getSelectedFile().exists()) {
                int messageDialog = JOptionPane.showConfirmDialog(fChooser, "O arquivo " + fChooser.getSelectedFile().getName() + " já existe! \n Deseja substituilo?");
                if (messageDialog == 0) {
                    try {
                        JScrollPane JSP = (JScrollPane)jtp.getSelectedComponent();
                        JTextArea textArea = (JTextArea)JSP.getComponent(1);
                        JFileWriter.write(fChooser.getSelectedFile(), textArea.getText());
                        
                        fileSaved = fChooser.getSelectedFile().toString();
                        fileIsSaved = true;
                        save.setEnabled(true);
                    } catch (Exception ex) {
                        System.out.print(ex.toString());
                    }
                }
            } else {
                try {
                    JScrollPane JSP = (JScrollPane)jtp.getSelectedComponent();
                    JTextArea textArea = (JTextArea)JSP.getComponent(1);
                    JFileWriter.write(fChooser.getSelectedFile(), textArea.getText());
                   
                    fileSaved = fChooser.getSelectedFile().toString();
                    fileIsSaved = true;
                    save.setEnabled(true);
                } catch (Exception ex) {
                    System.out.print(ex.toString());
                }
            }
        }

      //  if (obj.equals(save)) {
//
        //    try {
        //        JFileWriter.write(fileSaved, textArea.getText());
        //        fileIsSaved = true;
       //         save.setEnabled(true);
       //     } catch (Exception ex) {
              //  System.out.print(ex.toString());
       //     }

      //  }
   }
    /**
    public static void write(String outputFile, String content) throws IOException {
    File file = new File(outputFile);
    FileWriter fileWrt = new FileWriter(file);
    PrintWriter out = new PrintWriter(fileWrt);
    
    out.append(content);
    out.close();
    }
    
    public static void write(File outputFile, String content) throws IOException {
    File file = new File(outputFile.toString());
    FileWriter fileWrt = new FileWriter(file);
    PrintWriter out = new PrintWriter(fileWrt);
    
    out.append(content);
    out.close();
    }
    
    public static void open(String inputFile) throws IOException {
    File file = new File(inputFile);
    FileWriter fileWrt = new FileWriter(file);
    
    }
    
    public static void open(File inputFile) throws IOException {
    File file = new File(inputFile.toString());
    
    FileReader fileRdr = new FileReader(file);
    BufferedReader prt = new BufferedReader(fileRdr);
    StringBuffer conteudo = new StringBuffer();
    String line;
    while((line = prt.readLine())!= null){
    conteudo.append(line + "\n");
    }
    System.out.print(conteudo.toString());
    
    
    
    
    }
     **/
}