code: public void actionPerformed(ActionEvent e)
      {
          if (e.getSource() == this)
          {
              Date dateTarget = this.getTargetDate();
              JTimePopup popup = JTimePopup.createTimePopup(this.getTimeParam(), dateTarget, this, languageString);
              popup.addPropertyChangeListener(this);
          }
      }
docs: The user pressed the button, display the JTimePopup.
  @param e The ActionEvent.