GUI not reading input from Binary File. I have three files, the Swing output is correct but no input coming.

private java.util.ArrayList<Employee> empList = new java.util.ArrayList();

private ObjectInputStream input;
private ObjectOutputStream output;
private int noOfEmployee=0;
private int empIndex = 0;
private JTextField TextArea;
private JTextField TextName;
private JTextField TextSalary;
private JPanel Switch;
private JButton UndoBut;
private JButton SaveBut;
private JLabel Message;
private Employee currentEmployee;
private Employee [] employee;
public static final long serialVersionUID = 1L;


public EmployeeGUI () //why does this need to be before the main?
{
    setSize(1000, 300);
    setTitle("Employee Application");
   // addWindowListener(new WindowDestroyer());  DOES IT MATTER WHERE THIS IS
    Container content = getContentPane();  
    content.setBackground(Color.LIGHT_GRAY); //change this from  grey to yellow
    content.setLayout (new BorderLayout ());
    addWindowListener (new WindowDestroyer ());


    JPanel aPanel = new JPanel();
    aPanel.setBackground(Color.yellow);   
    aPanel.setLayout(new GridLayout(2,2)); //setting the LAYOUT OF THE PANEL

    JPanel aPanel1 = new JPanel ();
    aPanel1.add(new JLabel("Employee ID: "));
    TextArea = new JTextField (10);
    aPanel1.add(TextArea);
    aPanel1.setBackground(Color.yellow);
    aPanel.add(aPanel1);

    aPanel1 = new JPanel();
    aPanel1.add(new JLabel ("Employee Name: "));
    TextName = new JTextField (20);
    aPanel1.add(TextName);
    aPanel1.setBackground(Color.yellow);
    aPanel.add(aPanel1);

    aPanel1 = new JPanel();
    aPanel1.add(new JLabel ("Employee Salary: "));
    TextSalary = new JTextField (6);
    aPanel1.add(TextSalary);
    aPanel1.setBackground(Color.yellow);
    aPanel.add(aPanel1);

    JPanel bPanel2 = new JPanel();
    bPanel2.setLayout(new BorderLayout());

    JPanel cPanel3 = new JPanel();
    cPanel3 = new JPanel();
    cPanel3.setBackground(Color.cyan);

    Switch = new JPanel();
    Switch.setBackground(Color.cyan);

  //need to add 4 buttons next, previous , undo and save
    JButton aButton = new JButton("Next");
    aButton.addActionListener(this);
    cPanel3.add(aButton); //adding the button to the panel

    aButton = new JButton("Previous");
    aButton.addActionListener(this);
    cPanel3.add(aButton);

    bPanel2.add(cPanel3, "West");
    content.add(bPanel2,"South");

    UndoBut = new JButton ("Undo");
    UndoBut.addActionListener(this);
    Switch.add(UndoBut);
    UndoBut.setVisible(false);

    SaveBut = new JButton ("Save");
    SaveBut.addActionListener(this);
    Switch.add(SaveBut);
    SaveBut.setVisible(false);

    bPanel2.add(cPanel3, "West");
    bPanel2.add(Switch, "East");
    content.add(bPanel2, "South");

    content.add (aPanel, "North");


    Message = new JLabel();
    Message.setForeground(Color.white);
    content.add(Message, "Center");

    JMenuBar menu = new JMenuBar();
    JMenu show = new JMenu("File");

    JMenu menu1 = new JMenu ("Modify");
    JMenuItem menub = new JMenuItem ("Edit");
    menub.addActionListener(this);
    menu1.add(menub);
    show.add(menu1);

    menu1 = new JMenu ("Misc");
    menub = new JMenuItem("Exit");
    menub.addActionListener(this);
    menu1.add(menub);
    show.add(menu1);
    menu.add(show);
    setJMenuBar (menu);

}


public static void main(String[] args)
{
    EmployeeGUI gui = new EmployeeGUI();
    //gui.initialize();    //DO I NEED THIS
       gui.setVisible(true);
}

public void actionPerformed(ActionEvent e)
{
     Container content = getContentPane();
     String doThis = e.getActionCommand();

      if (doThis.equals("Next"))
      {
          nextEmployee();
      }

      else if (doThis.equals("Previous"))
      {
          previousEmployee();
      }
      else if (doThis.equals("Undo"))
      {
          undoEdit();
          //UndoBut.setVisible(false);
      }
      else if (doThis.equals("Save"))
      {
          saveEdit();
          //SaveBut.setVisible(false); // see if this works... I need the data to be saved and the button disappeared 
      }

      else if (doThis.equals("Edit"))
      {
          editData();
          UndoBut.setVisible(true);
          SaveBut.setVisible(true);
      }
      else if (doThis.equals("Exit"))
      {
          Message.setText("Exiting Application after saving data");
          saveData();
          System.exit(0);
      }
      else
      {
          System.out.println("erros in the Comman Interface");
      }
}


//now I have to read my data? yes

public void readData()
{

    try
    {
        input = new ObjectInputStream(new FileInputStream("employeedata.dat"));
        try
        {
                noOfEmployee = 0;
                while (true)
                {

                    Employee obj;
                    employee [noOfEmployee]= (Employee) input.readObject();

                    //empList.add((Employee)input.readObject());
                    //noOfEmployee +=1;
                }
            }

        catch(EOFException e1)
        {
            System.out.println("End of File");
        }
        catch(ClassNotFoundException e2)
        {
            System.out.println("Class Error:"+ e2.getMessage());
        }
        System.out.println("Read" +noOfEmployee +"records");
        input.close();
     }
    catch(FileNotFoundException e3)
    {
        System.out.println("File not found error:" + e3.getMessage());
    }
    catch(IOException e)
    {
        System.out.println("Error in the read file" + e.getMessage());
    }

}

public void loadData()
{
    currentEmployee =((Employee)empList.get(empIndex));
    TextArea.setText(Integer.toString(currentEmployee.getEID()));
    TextName.setText(currentEmployee.getEName());
    TextSalary.setText(Double.toString(currentEmployee.getESalary()));

}

public void nextEmployee()
{
    if (empIndex == noOfEmployee-1)
    {
        Message.setText("You are at the last record already");
    }
    else
    {
        Message.setText("");
        empIndex+=1;
        loadData();
    }
}

public void previousEmployee()
{
    if (empIndex==0)
    {
        Message.setText("You are at the first record already");

    }
    else 
    {
        Message.setText("");
        empIndex-=1;
        loadData();
    }
}

public void undoEdit()
{
    loadData ();
    invisible();
}
public void saveEdit ()
{
    currentEmployee = ((Employee)empList.get(empIndex));
    currentEmployee.setData(Integer.parseInt(TextArea.getText()), TextName.getText(), Double.parseDouble(TextSalary.getText()));
    invisible();

}
public void editData()
{
    TextArea.setEditable(true);
    TextName.setEditable(true);
    TextSalary.setEditable(true);
    UndoBut.setVisible(true);
    SaveBut.setVisible(true);
    Switch.setVisible(true);

}


public void saveData()
{           
    try
    {
        output = new ObjectOutputStream(new FileOutputStream("employeedata.dat",false));

        for(int i=0; i<noOfEmployee;i++)

        {
            output.writeObject(i);
        }

        //System.out.println(noOfEmployee+" were written into the file");  DO I NEED IT TO COUND THE FILE?
        System.out.println("You Wrote " +noOfEmployee+ " records!");
        output.close();
    }
    catch(IOException e)
    {
        System.out.println("Error in save data" +e.getMessage());
    }
}

public Employee(int i, String n, double s)
{
    eid = i;
    ename = n;
    esalary = s;
}

public void setData(int i, String n, double s)
{
    eid = i;
    ename = n;
    esalary = s;
}
public int getEID()
{
    return eid;
}

public String getEName()
{
    return ename;
}

public double getESalary()
{
        return esalary;
}
public String toString()
{
    String s = "";
    s += "ID = " + eid + " Name = " + ename;
    s += " Salary = " + esalary;
    return s;
}