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Java Inheritance Practice

Authored by Khalil Youssef

Computers

11th - 12th Grade

Used 58+ times

Java Inheritance Practice
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17 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Inheritance is used when the relationship between two classes is a(n) _______ relationship.

"HAS-A"
"PART-OF-A"
"IS-A"
inverse

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The following Syntax is used for?


class Subclass-name extends Superclass-name

{

//methods and fields

}

Polymorphism

Encapsulation

Inheritance

None of the above

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A class that is inherited is called a ______ .

superclass

Subclass

subsetclass

Relativeclass

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Class Cat extends Animal. Which is NOT a valid declaration?

Cat x = new Cat();

Animal X = new Animal();

Cat x = new Animal();

Animal x = new Cat();

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cat class extends Predator class.

Which of the following must be true?

A Cat object has access to all Predator variables and methods.

A Predator object has access to all Cat variables and methods.

Cat c = new Predator();

causes an error.

Predator p = new Cat();

p has access to Cat methods and uses the Predator implementations.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does polymorphism mean?

Changing shapes
Having many forms
Being unchangeable
Easy

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In Java, each child class can have only one parent.

True
False

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