Review Questions

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6.1

Which statements are true?

Select the two correct answers.

  1. In Java the extends clause is used to specify inheritance.

  2. The subclass of a non-abstract class can be declared abstract.

  3. All the members of the superclass are inherited by the subclass.

  4. A final class can be abstract.

  5. A class in which all the members are declared private, cannot be declared public.

6.2

Which statements are true?

Select the two correct answers.

  1. Inheritance defines a has-a relationship between a superclass and its subclasses.

  2. Every Java object has a public method named equals.

  3. Every Java object has a public method named length.

  4. A class can extend any number of other classes.

  5. A non-final class can be extended by any number of classes.



     
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