package  MyPackage;

 import  java.awt.event.*;

 public   class  MyClass  extends  JTable  implements  MouseListener
     public  MyClass() {
         this .addMouseListener( this );
    }

// MouseListener implementation
     public   void  mouseClicked(MouseEvent event) {
         if (event.getClickCount()== 1 ) {
            // single click  - срабатывает при любых кликах
        }

         if (event.getClickCount()== 2 ) {
            // double click
        }
    }
     public   void  mousePressed(MouseEvent event) {
    }
     public   void  mouseReleased(MouseEvent event) {
    }
     public   void  mouseEntered(MouseEvent event) {
    }
     public   void  mouseExited(MouseEvent event) {
    }
}