Enhance the class ButtonDemo (Listing) so that the GUI behaves in all of the following way...

Enhance the class ButtonDemo (Listing) so that the GUI behaves in all of the following ways: When the GUI first appears, both buttons are visible, but when one button is clicked, that button disappears and only the other button is visible. Thereafter, only one button is visible at a time; when the button is clicked, it disappears and the other button appears. When a button is clicked, the color changes, as in the version in Listing, and a smiley face appears when sunny is clicked and a frowning face appears when cloudy is clicked. When the program is first run, no face is visible in the GUI. Subsequent faces should replace the previous face. After ten button clicks, the message Only one more click appears. After one more click, the program ends.