Extract and validate textview input

ValidateInt.java

    private boolean isInt(TextField input, String message){
        try {
            int age = Integer.parseInt(input.getText());
            System.out.println("user is: " + age);
            return true;
        } catch (NumberFormatException e){
            System.out.println("Error: " + message + " is not a number");
            return false;
        }
    }