Please Help! Deadline is looming...just need a quick fix on this

Question

Hi,
I really need a quick fix to this problem....I am a beginer in Java...
This is part of my assignment and I really need to move forward with it...I am stuck with this little problem:
You'll find below this my code...I just need to figure out why my TextFields and DropDown Menus are invisible....or not there...
Can anybody have a quick glance? thanks in advance
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.awt.Dialog.*;
import java.util.StringTokenizer;
public class DetailsPopup extends Dialog implements ActionListener
Dialog Details;
Dialog Confirmation;
TextField SName;
TextField FName;
TextField Email;
TextField CCard;
Choice ChoiceExpMonth;
Choice ChoiceExpYear;
Color LightBlue = new Color(180,180,255);
DetailsPopup(Frame f)
   super(f);
   Button b3;  //submit
   b3 = new Button ("Submit"); //add the button "Submit"
   b3.addActionListener(this);
   Details = new Dialog(new Frame(),"Booking", false);
   Details.setSize(400, 500);
   Details.setLocation(320,240);
   Details.add("South", b3);
   Details.setResizable(false);
   Details.setVisible(true);
   Details.setBackground(LightBlue);
   setLayout( new FlowLayout());
public void init()
   add( new Label("Surname"));
   SName = new TextField(15);
   add(SName);
   add( new Label("First Name"));
   FName = new TextField(15);
   add(FName);
   add( new Label("E-mail"));
   Email = new TextField(15);
   add(Email);
   add( new Label("Credit/Debit Card"));
   CCard = new TextField(16);
   add(CCard);
   add( new Label("Expiry Date"));
   add( new Label("Month"));
   add(ChoiceExpMonth);
   int i=1;
   while (i<13)
     ChoiceExpMonth.addItem(new Integer(i).toString());
     i++;
   add(new Label("Year"));
   add(ChoiceExpYear);
   int j=2003;
   while (j<2008)
     ChoiceExpMonth.addItem(new Integer(j).toString());
     j++;
public void actionPerformed( ActionEvent e)
   String Name = "";
   String First = "";
   String Card = "";
   String Mail = "";
   String TestEmail = Email.getText();
   StringTokenizer st = new StringTokenizer(TestEmail,"@");
   if (SName.getText().length() == 0)
     Name = "bad";
   if (FName.getText().length() == 0)
     First = "bad";
   if (CCard.getText().length() != 16)
     Card = "bad";
   if (st.countTokens() != 1)
     Mail = "bad";
   if (Name.equals("bad") || First.equals("bad") || Card.equals("bad") || Mail.equals("bad"))
     Dialog Err = new Erratum (new Frame (),Name,First,Card,Mail);
   else
     Details.dispose();
     ConfirmationPopup Conf = new ConfirmationPopup(new Frame ());

Answer 1

well forget what i said then. I see what you are trying to do and it can be done this way but I don't really like it. My opinion however is not important yet!
I suggest you start by calling the init() method in the constructor. I don't see where you called this method and since you didn't then none of the text fields are created.
DetailsPopup(Frame f)
   super(f);
   Button b3;  //submit
   b3 = new Button ("Submit"); //add the button "Submit"
   b3.addActionListener(this);
   Details = new Dialog(new Frame(),"Booking", false);
   Details.setSize(400, 500);
   Details.setLocation(320,240);
   Details.add("South", b3);
   Details.setResizable(false);
   Details.setVisible(true);
   Details.setBackground(LightBlue);
   setLayout( new FlowLayout());
   init();