what do I have to change from the addtabelmodellistener so I can modify a list?

@Override
public void addTableModelListener(TableModelListener l) {
    super.addTableModelListener(l);
}

I have a problem I have to occupy the addtablemodellistener to make an event and then modify data from a row of a table but I do not know how to do it.

public void oyenteCambio(PropertyChangeListener oyente){
   cambio.addPropertyChangeListener(oyente);
}

I also have this in a listener to change the data both in the table (ram) and in a file is in java