JButton in JTable

Question

Hello all !
I want to create a JTable with Cell (class that I will write which extends JButton) in each cell of the table. Cell should contain a state, say 0,1,2 or 3, which dictates the representation of the cell. A representation of a cell contains a background color and an Icon. In addition, I want that if I press the left button of the mouse, the cell will change his state to 1, then to 2 and back to 1, and the right button of the mouse will change the state to 3, then to 4, and back to 3.
I have tried many ideas based on different examples I found on the Internet, but didn't get what I wanted, and now I'm really confused...
Can anyone help ?
I will be grateful for any help !
Thanks in advance !

Answer 1

First of all thanks for your wish to help !
First of all you have no need to extend JTable. You
just use a DefaultTableModel and add data to the
model.I tried to use DefaultTableModel, but now I don't see the table at all :)
Can you explain why ? The code is following:
public class JCFrame {
     private static void createAndShowGUI() {
          JFrame frame = new JFrame();
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          JCTable table = new JCTable();
          frame.add(table);
          frame.pack();
          frame.setVisible(true);
     public static void main(String[] args) {
          javax.swing.SwingUtilities.invokeLater(
               new Runnable() { public void run() { createAndShowGUI(); } });
public class JCTable extends JTable {
     public JCTable() {
          super(new JCTableModel());               
public class JCCell extends JButton {
     private int state;
     public JCCell(int initialState) {
          state = initialState;
public class JCTableModel extends DefaultTableModel {
     private final int numberOfRows = 2;
     private final int numberOfColumns = 3;
     private Object[][] cellsData = new JCCell[numberOfRows][numberOfColumns];          
     public JCTableModel() {
          for (int i = 0; i < numberOfRows; i++)
               for (int j = 0; j < numberOfColumns; j++)
                    cellsData[i][j] = new JCCell(numberOfRows * i + j);
}In addition, I don't understand why I don't need to extend JTable. If I want to see a table, I should use JTable somewhere, but where ??
If you don't want to see the column headers then you
can use table.setHeader( null );I tried to write this, but the compiler complains that he cannot find symbol method setHeader(...). I neither found this method in Java API. Are you sure about it ?
And one more question:
Should the renderer extend JButton ?
Many thanks !!