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Ans. To avoid ClassCastException. Though the following code will compile fine but will result in ClassCastException during runtime. Fruit fruit = new Apple(); Banana banana = Banana(fruit); // ClassCastException This code will not give compile time error as Banana and Fruit are related as Banana either extends or implement Fruit, So downcasting is acceptable. With this code we assume that the Fruit handler will have the Apple object at that point, violating which the code will throw the exception. This exception can be avoided by following code. Fruit fruit = new Apple(); if(fruit instanceOf Banana){ Banana banana = Banana(fruit); // ClassCastException } | ||||
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