
Selenium WebDriver with Java - Basics to Advanced and Frameworks - What are Abstract Classes and how Different are they
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Information Technology (IT), Architecture
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University
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Practice Problem
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Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of abstraction in Java?
To increase the execution time of programs
To make the code more complex
To hide the implementation details from the user
To provide a complete implementation of methods
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the aircraft construction scenario, what is the role of the parent class?
To provide specific color schemes for aircrafts
To define global rules and guidelines for aircraft construction
To manage only the safety guidelines
To implement all methods for child classes
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an abstract method in Java?
A method with a complete implementation
A method that is only used in interfaces
A method that is private and cannot be accessed
A method without a body that must be implemented by child classes
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does an abstract class differ from an interface in Java?
Abstract classes cannot be inherited, while interfaces can
Interfaces can have concrete methods, while abstract classes cannot
Abstract classes can have both abstract and concrete methods, while interfaces can only have abstract methods
Interfaces are used for inheritance, while abstract classes are not
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What keyword is used to inherit properties from a parent class in Java?
extends
inherits
implements
inheritsFrom
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't you instantiate an abstract class in Java?
Because it may contain methods without implementation
Because it is not allowed to have any methods
Because it contains private methods
Because it is only used for interfaces
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What access modifiers are allowed for methods in an abstract class?
Only public
Public, protected, or default
Only protected
Only private
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