Complex login dialog

Question

I am developing an online shopping center where the user needs to login if he wants to purchase any item. So login window should be shown for this. I am not getting any idea about this login screen. My login screen should do the following.
text fields to get user name & password, there should be 4 buttons
1.Sign in
2. Cancel
3. Forgot password
4. Create account.
if the login details are correct then the login dialog should be disposed & the control should return to the application. If the login details entered doesn't exist in database then an error dialog should be shown & after pressing the ok of the error dialog the control should return to the login dialog with all empty fields.
Forgot password should take the username which is the email id of the user & send a mail to the user with the password. create account should open a new window with all the details necessary for the account.
please tell me how should i go about in this. i had done a login dialog before but that only contains a yes_no option only. that time i created a jpanel with all fields then a joptonpane with this jpanel & i put the joptionpane in a jdialog's contentpane.
any help would be appreciated. even if you don't know how to do the complete problem just share whatever knowledge you have on this.

Answer 1

We use something like this... :
private void showLoginPopUp() {
     JTextField nameField = new JTextField();
     JPasswordField passField = new JPasswordField();
     int option = JOptionPane.showOptionDialog(null, new Object[] {"Name", nameField, "Password",
                    passField}
                    , "Login", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, null, null);
     if ((option == JOptionPane.CLOSED_OPTION) || (option == JOptionPane.CANCEL_OPTION)) {
          System.exit(0);
     userID = nameField.getText();
     password = new String(passField.getPassword());
     if (!isValidLogin(userID, password)) {
          showLoginPopUp();
As you can see, passing an array of objects as the message allows for a more customizable... look. Of course, this does not handle 'Forgot Password'... good luck. (if its not already too late).