//Run Button handler
  private class runButtonHandler implements ActionListener {
    public void actionPerformed(ActionEvent e){
      //TODO: implement
    }

    public double calcBal(double p, double t, double r){
      //TODO: implement
    }
  }

  //ActionListener that sets the action for when a user clicks "exit"
  private class ExitButtonHandler implements ActionListener{
    public void actionPerformed(ActionEvent e){
      //Simple system exit
      System.exit(0);
    }
  }
}