For the GeometricObject and Circle classes in Listings 11.1 and 11.2, answer the following questions:
a. Assume that circle and object1 are created as follows:
Circle circle = new Circle(1);
GeometricObject object1 = new GeometricObject();
Are the following Boolean expressions true or false?
(circle instanceof GeometricObject)
(object instanceof GeometricObject)
(circle instanceof Circle)
(object instanceof Circle)
b. Can the following statements be compiled?
Circle circle = new Circle(5);
GeometricObject object = circle;
c. Can the following statements be compiled?
GeometricObject object = new GeometricObject();
Circle circle = (Circle)object;
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