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Exam 13: Interfaces and Inner Classes

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Question 21

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The method that must be implemented in a class using the Comparable interface is:

A) public Object compareToObject other)
B) public Boolean compareToObject other)
C) public int compareToObject other)
D) none of the above

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Question 22

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The Serializable interface is like all the other Java interfaces in that it contains defined constants and method headings.

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Question 23

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Java source code that contains a class with an inner class,when compiled,will produce a separate .class file for the inner class.

An interface is a type.

You can not derive an interface from a base interface.

What are two advantages to using inner classes?

What are the obligations of a class that implements a specific interface?

What is an anonymous class?

When defining an inner class to be a helper class for an outer class,the inner classes access should be marked as:

An interface specifies the headings and definitions for methods that must be defined in any class that implements the interface.

Inner and outer classes do not have access to each other's private members.

An interface and all of its method headings are normally declared to be: