Java 8 Interview Questions Preparation Course – Free Udemy Courses

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 by an answer so that you can prepare for a job interview in a 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 a 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 a 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 patterns, 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 the 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 on 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 questions 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 the 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 a 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 an implementation of a method in a Java Interface?
27. What is a Default Method in an Interface?
28. Why do we need a 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 the new Date and Time API in Java 8 over the old Date API?
32. What are the main differences between the legacy Date/Time API in Java and the Date/Time API of Java 8?
33. How can we get the duration between two dates or times in Java 8?
34. What is the new method family introduced in Java 8 for processing Arrays on multi-core machines?
35. How does Java 8 solve the Diamond problem of Multiple Inheritance?
36. What are the differences between Predicate, Supplier, and Consumer in Java 8?
37. Is it possible to have a default method definition in an interface without marking it with the default keyword?
38. Can we create a class that implements two Interfaces with default methods of the same name and signature?
39. How Java 8 supports Multiple Inheritance?
40. Can we access a static method of an interface by using the reference of the interface?
41. How can you get the name of the 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 the current time by using the 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 a default method and an abstract class in Java 8?