JTable with row header plus value extraction from headers

Question

Hi, I am trying to do the following:
Short Version-
1. Create a table that has both row and column headers
2. Allow the user to mouse over any of these headers such that doing so will display an image I have produced on a panel. (I already know how to create the image and how to display it, I'm just not sure how to associate it with a particular row or column header)
3. Make the row headers look as much as possible like the column headers.
Slightly Longer Version-
Column headers will be labled A-H (maximum) while row headers will be labled 1-12 (maximum). Either can be less, however, depending on user input. After the table has been realized, the user will move the mouse over say, header 'H' and when they do, a JPEG image will appear on another panel and a tooltip will appear above the cell showing a formula. This happens when either row or column headers are moused over.
Currently, I am using the following code from the O'reilly Swing book as a baseline for experimentation but any help you can offer will be appreciated. I'm fairly new to the JTable world... :-(
TableModel tm = new AbstractTableModel(){
               String data[] = {"", "a", "b", "c", "d", "e"};
               String headers [] = {"Row #", "Column1", "Column2", "Column3", "Column4", "Column5"};
               public int getColumnCount(){ return data.length;}
               public int getRowCount() { return 1000;}
               public String getColumnName(int col){ return headers[col];}
               public Object getValueAt(int row, int col){
                    return data[col] + row;
          //creates a column model for the main table. This model ignores the first
          //column added and sets a minimum width of 150 pixels for all others
          TableColumnModel cm = new DefaultTableColumnModel(){
               boolean first = true;
               public void addColumn(TableColumn tc){
                    if(first) {first = false; return;}
                    tc.setMinWidth(150);
                    super.addColumn(tc);
          //Creates a column model that will serve as the row header table. This model
          //picks a maxium width and stores only the first column
          TableColumnModel rowHeaderModel = new DefaultTableColumnModel(){
               boolean first = true;
               public void addColumn(TableColumn tc){
                    if(first) {
                         tc.setMaxWidth(tc.getPreferredWidth());
                         super.addColumn(tc);
                         first = false;
          JTable grid = new JTable(tm, cm);
          //set up the header column and hook it up to everything
          JTable headerColumn = new JTable(tm, rowHeaderModel);
          grid.createDefaultColumnsFromModel();
          headerColumn.createDefaultColumnsFromModel();
          //make sure the selection between the main table and the header stay in sync
          grid.setSelectionModel(headerColumn.getSelectionModel());
          headerColumn.setBorder(BorderFactory.createEtchedBorder());
          headerColumn.setBackground(Color.lightGray);
          headerColumn.setColumnSelectionAllowed(false);
          headerColumn.setCellSelectionEnabled(false);
          JViewport jv = new JViewport();
          jv.setView(headerColumn);
          jv.setPreferredSize(headerColumn.getMaximumSize());
          //to make the table scroll properly
          grid.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
          //have to manually attach row headers but after that, the scroll pane
          //keeps them in sync
          JScrollPane jsp = new JScrollPane(grid);
          jsp.setRowHeader(jv);
          jsp.setCorner(ScrollPaneConstants.UPPER_LEFT_CORNER, headerColumn.getTableHeader());
          gridPanel.add(jsp, BorderLayout.NORTH);

Answer 1

There a number of nice examples on JTable: http://www.senun.com/Left/Programming/Java_old/Examples_swing/SwingExamples.html
Hope you could find something suitable ...
Regards,
Anton.