Problem removing components not a problem of revalidate

Question

ello everybody i'm trying to make a chart made of buttons in which every button press removes the pressed button, adds a TextField saves the string that was entered and than adding it as a label of a new Button instead of the one removed. the problem with the code is when i a button it removes the last button that was added
from the bottom right corner
import javax.swing.JButton;
import java.awt.GridLayout;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JFrame;
public class SudokoChart{
                private JFrame frm;
                private JButton btn;
     private TextField txt;
     private String label = null;
     private static final int DIMENSION = 9;
     private GridLayout chart;
  public class InnerHandler implements ActionListener{
        public void actionPerformed(ActionEvent e){
                if (e.getSource() instanceof JButton) {
                     btn = (JButton)e.getSource();
                                                     frm.list();
                    //chart.removeLayoutComponent(btn);
                    frm.remove(btn);
                    frm.validate();
                    txt  = new TextField();
                     frm.add(txt);
                     frm.pack();
                     frm.setVisible(true);
                     txt.addKeyListener(new KeyListener(){
                          public void keyPressed(KeyEvent e) {
                               if(e.getKeyChar() == KeyEvent.VK_ENTER){
                               label  = txt.getText();
                               txt.setText("");
                               frm.remove(txt);
                               frm.validate();
                               btn.setText(label);
                               frm.add(btn);
                               frm.validate();
                               frm.pack();
                               frm.setVisible(true);
                               public void keyReleased(KeyEvent arg0) {}
                               public void keyTyped(KeyEvent arg0) {}
     public SudokoChart(){
          frm = new JFrame("Sudoko Solver");
          chart = new GridLayout(DIMENSION,DIMENSION);
          frm.setLayout(chart);
     public void launchFrame(){
             boolean cont = true;
       for(int row = 0; row < DIMENSION; row++){
            for(int col = 0; col < DIMENSION; col++){
                 //compare between the action button point to  array button point (not related to
                 //the code)
                 btn = new JButton("Push to Enter");
                 //       butpoint[index] = btn; 
                cont = frm.add(btn).contains(btn.getLocation());
                System.out.println(cont);
                //butpoint[index].setLocation(btn.getLocation());
                // System.out.println(butpoint[index].getLocation());
                 //System.out.println(btn.getLocation());
                 //index++;
                //  butpoint[index] = btn;
                 //System.out.println(myButton.objCnt);
                 //frm.add(btn,chart,myButton.objCnt);
                 frm.pack();
                 frm.setVisible(true);
                 btn.addActionListener(new InnerHandler());                
     public static void main(String args[]){
          SudokoChart sc = new SudokoChart();
          sc.launchFrame();

Answer 1

It's an interesting way to go about this, but I'm not sure that I'd want to do it this way. Anyway, one way to possibly solve this problem is to use a 2D grid of JComponent that holds the JButtons, and then swap out your selected JButton for a JTextField, then remove all the JComponents from the container, and then re-add them using your GridLayout and your 2D array to add the components in the correct order.
Another way to do the same thing is to use a grid of a class that holds a JPanel that uses CardLayout that displays a JButton and on button press swaps this for a JTextField.
There are probably many ways to do what you want, and I'm not saying that either of my suggestions are best.
Edit: by the way, don't mix Swing and AWT components in the same app. Your TextFields should be JTextFields.
Edited by: Encephalopathic on Oct 16, 2009 2:39 PM