Top 20 Java 8 interview Questions and answers for freshers and experienced

You can find top 50 Java 8 interview questions and answers for freshers and experienced you can find here.

Java 8 Interview Questions for Freshers

Question 1: What are the key features of Java 8?

Question 2: What is a lambda expression in Java 8?

Question 3: What is the Stream API in Java 8?

Question 4: Explain the default methods in interfaces in Java 8.

Question 5: What is the functional interface in Java 8?

Java 8 Interview Questions for Experienced

Question 6: What are the new Date and Time API introduced in Java 8?

Question 7: Explain the Optional class in Java 8.

Question 8: What are method references in Java 8?

Question 9: How does Java 8 support parallel processing?

Question 10: What is the difference between map() and flatMap() methods in Java 8 Streams?

Java 8 Interview Questions for Both Freshers and Experienced

Question 11: What is the difference between forEach() and collect() method in Java 8 Streams?

Question 12: How does Java 8 handle null values in Streams?

Question 13: What are the benefits of using Java 8 over previous versions?

Question 14: Explain the concept of default methods in interfaces with an example.

Question 15: How can you use the filter() method in Java 8 Streams?

Additional Java 8 Interview Questions

Question 16: What is the Supplier interface in Java 8?

Question 17: How can you create a custom functional interface in Java 8?

Question 18: What is the use of the Collectors class in Java 8?

Question 19: Explain the concept of parallel streams in Java 8.

Question 20: How can you handle exceptions in Java 8 Streams?

Conclusion

Summary: This article provides a comprehensive list of Java 8 interview questions for both freshers and experienced professionals. It covers key features, lambda expressions, Stream API, default methods, functional interfaces, new Date and Time API, Optional class, method references, parallel processing, map() vs flatMap(), forEach() vs collect(), handling null values, benefits of Java 8, default methods in interfaces, filter() method, Supplier interface, custom functional interfaces, Collectors class, parallel streams, and exception handling in Java 8 Streams.