Write a program that takes a positive integer n as input from the user and displays an n by n checkerboard. (Hint: your main method could do user input then call the constructor for your GUI with n as the argument.) For example, when n = 5, there are 25 alternating white and black squares inside a square boarder. The lower right corner of the overall pattern must be white. Make sure that adjacent squares are different colors regardless of whether n is even or odd. You may want to use un-editable TextField Objects in a GridPane and use CSS to set background colors. Be sure to use javaFX components for this .