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Interview questions - Level 4

Java Multithreading

Level 4 , Lesson 13

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"Hi, Amigo! Here are some interview questions for you:"

	Interview questions
1	What do anonymous inner classes become after being compiled?
2	Can inner classes be inherited?
3	Can anonymous inner classes be inherited?
4	Can you override inner classes?
5	What limitations do local classes have?
6	Can an anonymous inner class contain static methods?
7	Can you create an instance of an inner class if the outer class only has a private constructor?
8	Can you declare inner classes as private?
9	Can you declare anonymous inner classes as private?
10	How many inner classes can a class have?

"But, Professor, I haven't been told the answers to these questions!"

"Amigo, do you think employers prepare interview questions based on my lessons?"

"Uhhhh... No."

"This isn't college. If you need answers, google them."

"And say thanks for the questions."

"Thanks."

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Comments (13)

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cute potato Level 46, Poland, Poland

12 December 2022

Hi! Can someone me help with 10th question? How many inner classes can a class have?

Lisa L Level 47, Nuremberg, Germany

5 May 2022

6. In Java 8: no, in newer versions (from 16 on): yes https://www.oracle.com/java/technologies/javase/16-relnote-issues.html#JDK-8246771

TomL Level 30, Prague, Czech Republic

16 June 2021

I'm confused with the 4th question - if I inherit inner class, think there's no problem to override any non-final method of this inner class. But what is meant by "overriding inner class"?

Andrei Level 41

12 April 2021

Can someone help me with these please? I haven't found anything on the internet. 7. Can you create an instance of an inner class if the outer class only has a private constructor? 9. Can you declare anonymous inner classes as private?