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Question 1

To achieve inheritance in Java, use ____ keyword.

Answer 1

extend

Question 2

Inheritance is a ________; a child inherits from a parent, not the other way around.

Answer 2

one-way proposition

Question 3

child classes are more ____ than the parent class they extend

Answer 3

specific

Question 4

To override a field or method in a child class means to use the ________.

Answer 4

child’s version instead of the parent’s version.

Question 5

When Java developers refer to methods that work appropriately for subclasses of the same parent class, the more specific term is _____ ______.

Answer 5

subtype polymorphism.

Question 6

The __ _______ lets the compiler know that your intention is to override a method in the parent class rather than create a method with a new signature.

Answer 6

override annotation

Question 7

When you instantiate an object that is a member of a child class, you actually are calling both the constructor for the parent class and the constructor for the extended, child class. When you create any child class object, ____, ________.

Answer 7

the parent class constructor must execute first, and then the child class constructor executes.

Question 8

The keyword ____ always refers to the superclass of the class in which you use it.

Answer 8

super

Question 9

the _________ must be the first statement in any subclass constructor that uses it.

Answer 9

super() statement