Unknown behaviour of interface TableModelListener

Question

Hi,
I don�t succeed to implement interface TableModelListener in an inherited class of JTable.
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import javax.swing.JTable;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
class ContrTab extends JTable implements MouseListener, MouseMotionListener, TableModelListener {
     private Object target=null;
     public ContrTab(Vector rows, Vector colHead) {
          super (rows, colHead);
          super.addMouseListener(this);
          super.getModel().addTableModelListener(this); // this instead of super doesn't change anything
//     public static void main(String[] args) {}
     public void mouseEntered(MouseEvent me) {
          target = me.getSource().getClass().getName();
          System.out.println("mouse moves over " + target);
     public void mouseClicked(MouseEvent me) {}
     public void mouseExited(MouseEvent me) {}
     public void mousePressed(MouseEvent me) {}
     public void mouseReleased(MouseEvent me) {}
     public void mouseDragged(MouseEvent arg0) {}
     public void mouseMoved(MouseEvent arg0) {}
     public void tableChanged(TableModelEvent x) {
          System.out.println("reaction of tableChanged-method because of " + x);     
}1) What astonishes me first:
The compiler even doesn�t complain when I omit the TableModelListener method
�tableChanged� inside this class after adding this interface.
2) What happens adding the tableChanged method
The table (i.e. the instance of this inherited class) isn�t constructed anymore by the calling class
Who�s got answers to 1) and 2)
Thanks

Answer 1

Thanks for your answer, but I'm not sure if I've got it right:
The syntax of tableChanged is
public void tableChanged(TableModelEvent e)My code:
public void tableChanged(TableModelEvent x) {
          System.out.println("reaction of tableChanged-method because of " + x);     
     }and that's how I made it, I didn't change the signature means I didn't overload it.
So what do you mean?
Kind regards