I am making a calculator that will find the answer of two numbers. x + y = answer for example. There is a textfield for xInput, yInput, operatorInput, and answer. There are also numbered buttons 0-9. When you press 0, it will add a zero to x or y depending on which textfield is selected. When you click on a text field I want it to select it. Is there a way to give both xInput and yInput the same listener?