Let Point be a generic type.We want to write a method that takes as parameter Point objects whose type parameter is the Number class,or any superclass of Number.We can do this by writing A) Point B) Point C) Point D) Point

Question

Let Point< T > be a generic type.We want to write a method that takes as parameter Point objects whose type parameter is the Number class,or any superclass of Number.We can do this by writing A) Point< Number > B) Point< ? super Number > C) Point< ? extends Number > D) Point< ? sub Number >

Quizplus · Accepted Answer

The wildcard type <? super Number> is used when we want to accept a Point object whose type parameter is Number or its superclass. The keyword "super" is used to specify that the type parameter of Point is a superclass of Number. Therefore, this option is the best choice.

Let Point< T > Be a Generic Type