inspector jtable events mouseclicked..add handler "my_handler_name" -
in the code youll find something like :

private void usertbl_mouse(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
int row = usertbl.getSelectedRow();
int col = usertbl.getSelectedColumn();
System.out.println( "row:"+ row + ":" + col );

col / row count starts at 0 !!!!
*fin