Inheritance - Using extends
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OO Concepts Quiz 4
The quiz below tests your knowledge of the material learnt in OO Concepts - Lesson 4 - Inheritance - Using extends
.
Question 1 : What is output from the following code snippet?
package info.java8;
public class A {
}
package info.java8;
public class B {
}
package info.java8.sub;
import info.java8.A;
import info.java8.B;
public class AA extends A, B {
public static void main(String[] args) {
System.out.println("In class AA");
}
}
- The code snippet doesn't compile as class <code>AA</code> cannot extend more than one class.
Quiz Progress Bar
Quiz 1
Access Modifiers
Quiz 2
Protecting Our Data
Quiz 3
Inheritance - Basics
Quiz 5
Inheritance - Overriding
Quiz 6
Inheritance - Concepts
Quiz 7
Inheritance - super
Quiz 8
Abstraction
Quiz 9
Polymorphism
Quiz 10
Interfaces
Quiz 11
Interfaces - Default Methods
Quiz 12
Deeper Into Polymorphism
Quiz 13
Functional Interfaces
Quiz 14
Lambda Expressions
Quiz 15
Method References
Quiz 16
Nested Static Classes
Quiz 17
Nested Inner Classes
Quiz 18
Anonymous Inner Classes
Quiz 19
Object
Superclass
Quiz 20
Checking Object Equality
What's Next?
In the next quiz we test your knowledge of overriding methods when using inheritance.