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Exam 10: Introduction to Inheritance

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Question 31

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When you create a class by making it inherit from another class, you are provided with data fields and ____ automatically.

A) fonts
B) methods
C) class names
D) arrays

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Question 32

Multiple Choice

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You would like to make a member of a class visible in all subclasses regardless of what package they are in. Which one of the following keywords would achieve this?

A) private or protected
B) private
C) protected
D) public

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Question 33

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____ is the principle that allows you to apply your knowledge of a general category to more specific objects.

class InstanceofDemo { public static void main(String[] args) { Parent object1 = new Parent(); Parent object2 = new Child(); System.out.println("object1 instanceof Parent: " + (obj1 instanceof Parent)); System.out.println("object1 instanceof Child: " + (obj1 instanceof Child)); System.out.println("object1 instanceof MyInterface: " + (obj1 instanceof MyInterface)); System.out.println("object2 instanceof Parent: " + (obj2 instanceof Parent)); System.out.println("object2 instanceof Child: " + (obj2 instanceof Child)); System.out.println("object2 instanceof MyInterface: " + (obj2 instanceof MyInterface)); } } The above code defines a parent class (named Parent), a simple interface (named MyInterface), and a child class (named Child) that inherits from the parent and implements the interface. Following program execution, what will be the output of the six println statements?

Within a subclass, you can think of the keyword ____ as the opposite of super.

Using a class named Student, write the statement to create a yearOne object of the Student class.

What are virtual method calls?

Conventionally, arrows used in a ____ to show inheritance relationships extend from the descendant class and point to the one from which it descends.

What does polymorphism mean in Java programming?

The ability to use inheritance in Java makes programs easier to write, ____, and more quickly understood.

You can use the ____ modifier with methods when you don't want the method to be overridden.

The methods in a subclass can use all of the data fields and methods that belong to its parent, with one exception: ____ members of the parent class are not accessible within a child class's methods.

How is the keyword protected used?

Which statement correctly declares a sedan object of the Car class?

The term ____________________ means "many forms."

Match each term with the correct statement below. -Makes a program run faster

If jrStudent is an object of Student, which of the following statements will result in a value of true?

A class diagram consists of a rectangle divided into three sections.

In most Java classes, the keyword private precedes each data field, and the keyword ____________________ precedes each method.

What is the process of inlining and how is it accomplished in Java?