public DecreaseButton(CountLabel l) {
   lbl = l;
   setText("decrease");
   addActionListener(lbl.getDecListener());
 }
 public void actionPerformed(ActionEvent e) {
   lbl.decreaseCount();
 }
 public IncreaseButton(CountLabel l) {
   lbl = l;
   setText("increase");
   addActionListener(lbl.getIncListener());
 }