Java 8 Interview Questions Preparation Course

Learn Top 50 Interview Questions on Java 8. Get Success in your Interview.

4.30 (1086 reviews)
Udemy
platform
English
language
Software Engineering
category
24,468
students
2 hours
content
Aug 2017
last update
FREE
regular price

What you will learn

Learn important concepts of Java 8

Understand Java 8 features

Answer interview questions on Java 8

Demand higher salary or promotion based on the knowledge gained

Description

Java 8 is one of the major releases from Java with features like Streams, Lambdas etc. A lot of companies are looking for software developers proficient in Java 8 features.

This course contains basic to expert level Java 8 interview questions that an interviewer asks. Each question is accompanied with an answer so that you can prepare for job interview in short time. 

We have compiled this course after attending dozens of technical interviews in top-notch companies like- Google, Netflix, Amazon etc.

Often, these questions and concepts are used in our daily programming work. But these are most helpful when an Interviewer is trying to test your deep knowledge of Java 8 features.

What is the biggest benefit of this course to me?

Finally, the biggest benefit of this course is that you will be able to demand higher salary in your next job interview.

It is good to learn Java 8 for theoretical benefits. But if you do not know how to handle interview questions on Java 8, you can not convert your Java 8 knowledge into higher salary.

What are the topics covered in this course?

We cover a wide range of topics in this course. We have questions on Java 8 best practices, Security, Pact, Bulkhead Design Pattern etc.

How will this course help me?

By attending this course, you do not have to spend time searching the Internet for Java 8 interview questions. We have already compiled the list of the most popular and the latest Java 8 Interview questions. 

Are there answers in this course?

Yes, in this course each question is followed by an answer. So you can save time in interview preparation.

What is the best way of viewing this course?

You have to just watch the course from beginning to end. Once you go through all the videos, try to answer the questions in your own words. Also mark the questions that you could not answer by yourself. Then, in second pass go through only the difficult questions. After going through this course 2-3 times, you will be well prepared to face a technical interview in Java 8 topic.

What is the level of questions in this course?

This course contains questions that are good for a Fresher to an Architect level. The difficulty level of question varies in the course from a Fresher to an Experienced professional.

What are the sample questions covered in this course?

Sample questions covered in this course are as follows:

  1. What are the new features released in Java 8?
  2. What are the main benefits of new features introduced in Java 8?
  3. What is a Lambda expression in Java 8?
  4. What are the three main parts of a Lambda expression in Java?
  5. What is the data type of a Lambda expression?
  6. What is the meaning of following lambda expression?
  7. Why did Oracle release a new version of Java like Java 8?
  8. What are the advantages of a lambda expression?
  9. What is a Functional interface in Java 8?
  10. What is a Single Abstract Method (SAM) interface in Java 8?
  11. How can we define a Functional interface in Java 8?
  12. Why do we need Functional interface in Java?
  13. Is it mandatory to use @FunctionalInterface annotation to define a Functional interface in Java 8?
  14. What are the differences between Collection and Stream API in Java 8?
  15. What are the main uses of Stream API in Java 8?
  16. What are the differences between Intermediate and Terminal Operations in Java 8 Streams?
  17. What is a Spliterator in Java 8?
  18. What are the differences between Iterator and Spliterator in Java 8?
  19. What is Type Inference in Java 8?
  20. Does Java 7 support Type Inference?
  21. How does Internal Iteration work in Java 8?
  22. What are the main differences between Internal and External Iterator?
  23. What are the main advantages of Internal Iterator over External Iterator in Java 8?
  24. What are the applications in which we should use Internal Iteration?
  25. What is the main disadvantage of Internal Iteration over External Iteration?
  26. Can we provide implementation of a method in a Java Interface?
  27. What is a Default Method in an Interface?
  28. Why do we need Default method in a Java 8 Interface?
  29. What is the purpose of a Static method in an Interface in Java 8?
  30. What are the core ideas behind the Date/Time API of Java 8?
  31. What are the advantages of new Date and Time API in Java 8 over old Date API?
  32. What are the main differences between legacy Date/Time API in Java and Date/Time API of Java 8?
  33. How can we get duration between two dates or time in Java 8?
  34. What is the new method family introduced in Java 8 for processing of Arrays on multi core machines?
  35. How does Java 8 solve Diamond problem of Multiple Inheritance?
  36. What are the differences between Predicate, Supplier and Consumer in Java 8?
  37. Is it possible to have default method definition in an interface without marking it with default keyword?
  38. Can we create a class that implements two Interfaces with default methods of same name and signature?
  39. How Java 8 supports Multiple Inheritance?
  40. Can we access a static method of an interface by using reference of the interface?
  41. How can you get the name of Parameter in Java by using reflection?
  42. What is Optional in Java 8?
  43. What are the uses of Optional?
  44. Which method in Optional provides the fallback mechanism in case of null value?
  45. How can we get current time by using Date/Time API of Java 8?
  46. Is it possible to define a static method in an Interface?
  47. How can we analyze the dependencies in Java classes and packages?
  48. What are the new JVM arguments introduced by Java 8?
  49. What are the popular annotations introduced in Java 8?
  50. What is a StringJoiner in Java 8?
  51. What is the type of a Lambda expression in Java 8?
  52. What is the target type of a lambda expression ?
  53. What are the main differences between an interface with default method and an abstract class in Java 8?

Content

Why should you learn Java 8?

Introduction
Disclaimer

Java 8 Interview Questions Part 1

What are the new features released in Java 8?
What are the main benefits of new features introduced in Java 8?
What is a Lambda expression in Java 8?
What are the three main parts of a Lambda expression in Java?
What is the data type of a Lambda expression?

Java 8 Interview Questions Part 2

Why did Oracle release a new version of Java like Java 8?
What are the advantages of a lambda expression?
What is a Functional interface in Java 8?
Why do we need Functional interface in Java?
What are the differences between Collection and Stream API in Java 8?

Java 8 Interview Questions Part 3

What are the main uses of Stream API in Java 8?
What are the differences between Intermediate and Terminal Operations?
What is a Spliterator in Java 8?
What is Type Inference in Java 8?
How does Internal Iteration work in Java 8?

Java 8 Interview Questions Part 4

What are the main advantages of Internal Iterator over External Iterator?
Can we provide implementation of a method in a Java Interface?
Why do we need Default method in a Java 8 Interface?
What is the purpose of a Static method in an Interface in Java 8?
What are the core ideas behind the Date/Time API of Java 8?

Java 8 Interview Questions Part 5

What are the advantages of new Date and Time API in Java 8 over old Date API?
What are the main differences between legacy Date/Time API and Java 8 Date API?
How can we get duration between two dates or time in Java 8?
What is the new method family introduced in Java 8 for processing of Arrays?
How does Java 8 solve Diamond problem of Multiple Inheritance?

Java 8 Interview Questions Part 6

What are the differences between Predicate, Supplier and Consumer in Java 8?
Is it possible to have default method definition in an interface?
How Java 8 supports Multiple Inheritance?
How can you get the name of Parameter in Java by using reflection?
What is Optional in Java 8?

Java 8 Interview Questions Part 7

How can we get current time by using Date/Time API of Java 8?
Is it possible to define a static method in an Interface?
How can we analyze the dependencies in Java classes and packages?
What are the new JVM arguments introduced by Java 8?
What are the popular annotations introduced in Java 8?

Java 8 Interview Questions Part 8

What is a StringJoiner in Java 8?
What is the type of a Lambda expression in Java 8?
Main differences between an interface with default method and an abstract class.
Bonus Lecture: What next?

Screenshots

Java 8 Interview Questions Preparation Course - Screenshot_01Java 8 Interview Questions Preparation Course - Screenshot_02Java 8 Interview Questions Preparation Course - Screenshot_03Java 8 Interview Questions Preparation Course - Screenshot_04

Reviews

Gayathri
February 13, 2022
Content was very good, specially to prepare just before the interview at last moment, would suggest to add at least one example for each topic specially internal and external iterator.
Joseph
April 27, 2021
Good way to prep for Java interview. Need to review basics before interview because they get stale on projects.
Clara
October 14, 2020
Good course. You learn about new concepts (if you have not yet used them) and you consolidate knowledge of others and the possibility of responding better in an interview.
Abdul
October 11, 2020
This can be improvised by providing some examples and also can grouped together by concepts, course is little scattered
Paula
April 23, 2020
It could be clearer with the Interfaces and Lambdas definitions, but it has a lot of info and tricky questions that I'm sure are going to help me.
Siddhartha
March 13, 2020
More theory and less code samples, difficult to map and have an image what the concept look like. Poor
Tribhuwan
November 30, 2018
must go once free course.good for beginners as well exp persons. 1.must go throw it before going in interview.
Mario
November 27, 2018
Very nice course. I just suggest adding leave the material presented as downloadable material. Thanks a lot!!!
Rajesh
November 20, 2018
Please give the e.g. for all the questions which will help everyone along with the concepts. Expecting more e.g in all questions.
Mayank
November 17, 2018
Please provide the practical and technical examples with code for each questions, which will led better explanation foundation. Simply providing the theoretical knowledge is not worth, one can get this from youtube type of channels also, So whats the need to come up over udemy. Please improve the quality of questions with better way of explanations.
Juan
October 30, 2018
I liked the course, i think that It is a brief but to the point, however it would be good if it could show some examples at the end of each topic. Thanks for the course.
Piyush
October 14, 2018
really time consuming greeting in each video. Typos in the PPT, very bad explanation for some things. Many things have been said wrong in this course. This course is poison to a new person's career!
Lap
September 16, 2018
-Should provide a brief summary of questions and answers to be downloadable as cheat sheet so that student can memorise it later time. - Instructor should provide more insight and possible picture to explain the answers rather than just sentences.
JITENDRA
September 12, 2018
From interview perspective, valuable verbal answers provided for basic features in short time . Thanks.
Aseem
May 16, 2018
its good - covers all important basic, but there is scope to add more details and explanation to the answers, still a good overall refresher in short time

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1113612
udemy ID
2/14/2017
course created date
8/17/2019
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