How to use drop down menu in JTables

Question

Hi, i'm trying to add an drop down menu to my jtable so that people can select a set number of texts from an enum type. How can this be accomplished?
My current Code: /**
* Bill Huang
* Started: Nov 07, 2007
* Dossier
package packageSolo;
import javax.swing.*;
import java.awt.*;
public class SpreadSheetGUI extends JPanel{
     private void debug(int x){
          //System.out.println(x);
     protected static Object[][] data;
     protected static int classroomAmount = 0;
     protected static JTable jtable;
     protected static String[] columnNames = { "Class Room Number", "Period One", "Period Two", "Period Three", "Period Four" };
     public SpreadSheetGUI(){
          super(new GridLayout(1,0));
          String input;
          int flag2 = 0;
          int flag4 = 0;
          int flag5 = 0;
          int flag8 = 0;
          input = JOptionPane
                    .showInputDialog("How many classrooms are there?");
           * see if the user wantes to quit at this point
          if (input == null) {
               debug(4);
               int exitint = 0;
               exitint = JOptionPane.showConfirmDialog(null,
                         "Do you want to exit?", "Exit?",
                         JOptionPane.OK_CANCEL_OPTION);
               if (exitint == 0) {
                    try {
                         System.exit(1);
                    } catch (SecurityException eb) {
                         System.out.println("exit");
          while (flag4 == 0) {
                * this while loop with flag2 is for checking if the thing is of int
                * class
               while (flag2 == 0) {
                     * try to get a integer, check for a bad input class
                    try {
                          * parse, and if success set flag2 to 1 and break out this
                          * while loop
                         classroomAmount = Integer.parseInt(input);
                         flag2 = 1;
                         debug(2);
                    } catch (NumberFormatException ec) {
                         debug(3);
                          * ops user input was not a integer class
                         JOptionPane
                                   .showMessageDialog(null,
                                             "Enter a positive integer only",
                                             "Number Format is Wrong",
                                             JOptionPane.ERROR_MESSAGE);
                         input = JOptionPane
                                   .showInputDialog("How many months are there?");
                          * see if the user wantes to quit at this point
                         if (input == null) {
                              debug(4);
                              int exitint = 0;
                              exitint = JOptionPane.showConfirmDialog(null,
                                        "Do you want to exit?", "Exit?",
                                        JOptionPane.OK_CANCEL_OPTION);
                              if (exitint == 0) {
                                   try {
                                        System.exit(1);
                                   } catch (SecurityException eb) {
                                        System.out.println("exit");
                * this while loop sees if the integer is smaller than 0 so the
                * array cannot be a real one
               while (flag5 == 0) {
                    // numamountint = Integer.parseInt(numamount);
                    if (classroomAmount < 0 || classroomAmount > 12) {
                         debug(5);
                         JOptionPane
                                   .showMessageDialog(null,
                                             "Enter a positive integer that is smaller than 12",
                                             "Number Format/Size is Wrong",
                                             JOptionPane.ERROR_MESSAGE);
                         input = JOptionPane
                                   .showInputDialog("How many months are there?");
                         if (input == null) {
                              int exitint = 0;
                              exitint = JOptionPane.showConfirmDialog(null,
                                        "Do you want to exit?", "Exit?",
                                        JOptionPane.OK_CANCEL_OPTION);
                              if (exitint == 0) {
                                   try {
                                        System.exit(1);
                                   } catch (SecurityException eb) {
                                        System.out.println("exit");
                          * this while loop check for number format again
                         while (flag8 == 0) {
                              try {
                                   debug(6);
                                   classroomAmount = Integer.parseInt(input);
                                   flag8 = 1;
                              } catch (NumberFormatException ec) {
                                   debug(7);
                                   JOptionPane.showMessageDialog(null,
                                             "Enter a positive integer only",
                                             "Number Format is Wrong",
                                             JOptionPane.ERROR_MESSAGE);
                                   input = JOptionPane
                                             .showInputDialog("How many months are there?");
                                   if (input == null) {
                                        int exitint = 0;
                                        exitint = JOptionPane.showConfirmDialog(null,
                                                  "Do you want to exit?", "Exit?",
                                                  JOptionPane.OK_CANCEL_OPTION);
                                        if (exitint == 0) {
                                             try {
                                                  System.exit(1);
                                             } catch (SecurityException eb) {
                                                  System.out.println("exit");
                    } else {
                          * here the input is greater than 0 so it sets flag5 and 4
                          * then break out of the while loops
                         debug(8);
                         flag5 = 1;
                         flag4 = 1;
          data = new String[classroomAmount][5];
          jtable = new JTable(data, columnNames);
          jtable.setPreferredScrollableViewportSize(new Dimension(800, 600));
          JScrollPane scrollPane = new JScrollPane(jtable);
          this.add(scrollPane);
          this.show();
}

Answer 1

        Object[] possibilities = {"1", "2", "3"};
        input = (String) JOptionPane.showInputDialog(null,
                "Please choose the number of classrooms:",
                "How many classrooms are there?",
                JOptionPane.PLAIN_MESSAGE,
                null, possibilities, "1");Edited by: Andre_Uhres on Nov 8, 2007 8:22 AM
I thought you need a combo for JTable row set. Seems I misunderstood.
See next posting.