Learn Java from Scratch - A Beginner's Guide - Step 16 - Java Interface - Example 1 - Gaming Console - How to Think abou
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Information Technology (IT), Architecture
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of an interface in Java?
To provide a blueprint for classes
To manage memory
To store data
To execute code
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does an interface differ from an abstract class?
Interfaces can have constructors
Interfaces provide method definitions
Interfaces only provide method declarations
Interfaces can have instance variables
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What keyword is used to implement an interface in a class?
extends
implements
inherits
uses
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the Mario game example, what action is performed when the 'up' button is pressed?
Mario moves right
Mario ducks
Mario jumps
Mario moves left
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the advantage of using interfaces in terms of code flexibility?
They allow for faster execution
They reduce memory usage
They enable multiple inheritance
They allow for multiple implementations
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What concept allows different classes to provide different implementations for the same interface?
Polymorphism
Encapsulation
Inheritance
Abstraction
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you switch between different implementations of an interface in your code?
By changing the interface methods
By using different constructors
By creating new interface instances
By replacing the implementation class
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