When I google for "JTable JCheckbox cell" I get thousands of hits but they
do not explain on how to put a JCheckBox into all cells of a column and how
to retrieve the current status (checked/unchecked) from it.

As I understand I have to replace the current DefaultRenderer by
my own Renderer class. Currently my JTable is defined similar to:

        myJTable = new JTable(myTableModel) {
          public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
            Component component = super.prepareRenderer(renderer,row,column);
            if (isRowSelected(row))
               component.setBackground(Color.blue);
            else if (((String)getValueAt(row,column)).equals("Test"))
             component.setBackground(Color.yellow);
          else
               component.setBackground(Color.white);
           
           return component; }
          };

How can I extend this code with the necessary JCheckBox additions?

Mark