Help with JOptionPane - custom InputDialog

Question

I need a little help here because I am trying to build a custom JOptionPane that prompts the user to choose 3 values from 3 drop-down lists and then returns those three values in a string. Specifically, this dialog is a very simple date chooser (because I don't really want to use JDateChooser right now). How do I overwrite the showInputDialog() method or the paintComponent() method to make it display three drop-downs?

Answer 1

Here's an example with multiple text fields. You should be able to modify it easily to use combo boxes:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class OptionPaneMultiple extends JFrame
     public OptionPaneMultiple()
          JTextField firstName = new JTextField(5);
          JTextField lastName = new JTextField(5);
          Object[] msg = {"First Name:", firstName, "Last Name:", lastName};
          Object[] options = {"Ok", "Cancel", "Whatever"};
          JOptionPane op = new JOptionPane(
               msg,
               JOptionPane.PLAIN_MESSAGE,
               JOptionPane.OK_CANCEL_OPTION,
               null,
               options);
          JDialog dialog = op.createDialog(this, "Enter Name...");
          dialog.show();
          int result = JOptionPane.OK_OPTION;
          try {result = ((Integer)op.getValue()).intValue();}
          catch(Exception uninitializedValue){}
          if(result == JOptionPane.OK_OPTION)
               System.out.println(firstName.getText() + " : " + lastName.getText());
          else
               System.out.println("Canceled");
     public static void main(String[] args)
          JFrame frame = new OptionPaneMultiple();
          frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
          frame.pack();
          frame.setVisible(true);
}