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- class Car {}
-
- class FastCar extends Car {}
-
- class Super {
- Car getCar() {
- return new Car();
- }
- }
-
- class Sub extends Super {
- FastCar getCar() {
- return new FastCar();
- }
- }
-
- public class CovBaseProgram01 {
- public static void main(String[] argv) {
- new CovBaseProgram01().run();
- }
-
- public void run() {
- Super instance_super = new Super();
- Sub instance_sub = new Sub();
-
- Car c1 = instance_super.getCar();
- Car c2 = instance_sub.getCar();
- }
- }
-
- // FastCar is a subclass of Car.
- // Sub is a subclass of Super.
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