Question

USING JAVA (JavaFX): Modify the code given

using the following steps:
- Add an exit button:
- For the exit button, it should simply exit with code 0.
-Round the result in field C to 2 decimal
places.

Answer 1

To add an exit button in JavaFX, create a Button instance, set an action to call Platform.exit() and System.exit(0). To round a result to two decimal places, use String.format() or DecimalFormat and then set the text of the output field with the formatted value.

Step-by-step explanation:

In JavaFX, to add an exit button that closes the application with code 0, you can use the setOnAction event handler for the button and call the method Platform.exit(). For rounding the result in a field to two decimal places, you can utilize String.format() or the DecimalFormat class. Here's an example of how to add the button and round the result:

Button exitButton = new Button("Exit");
exitButton.setOnAction(e -> {
Platform.exit();
System.exit(0);
});

// Assuming 'result' is the value to be rounded
double result = ...; // calculate your result here
String roundedResult = String.format("%.2f", result); // rounds to 2 decimal places
fieldC.setText(roundedResult); // fieldC is a TextField where the result is displayed

Replace the appropriate sections with your specific variable names and calculations. This will add the exit functionality to your application and ensure your result is always displayed with two decimal places.