Help with Java please

Assume you have a GUI program with two text fields, a + button and a - button. The user types a number into each text field. When they click one of the buttons, either the sum or difference is then calculated and displayed. The user can then no longer click either button. Write the code that would inside of a single handler method used for both buttons. Use the following objects: TextField inputNumber1TextField TextField inputNumber2TextField Button plusButton Button minusButton Text resultText For full credit, reduce duplicated code. private void handleBothButtons(ActionEvent event) { // your code here }