Modify the ClockPane class with three new Boolean properties?hourHandVisible, minuteHandVisible, and secondHandVisible?and their associated accessor and mutator methods. You can use the set methods to make a hand visible or invisible. Write a test program that displays only the hour and minute hands. The hour and minute values are randomly generated. The hour is between 0 and 11, and the minute is either 0 or 30, as shown in Figure 14.52b.

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12 3 6. 9:10:0 (b)