Topics about core Java, Spring, Spring Boot Framework, Kafka, automation testing,
Java Software Developer Interview Questions
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basic Java questions
How object is created in database when you try to fetch employee data from db?
what is abstract class in java?
Day to Day activity as Java developer.
Exception Handling
String concepts, Exception handling, core java related questions
Core Java diff btw == and equals Abstraction and Encapsulation Diff btw double and Double
Technical Round: Q1. Explain the Spring Security. Q2. Explain the flow of a Rest API call from frontend to backend and response back to frontend. Q3. Explain JWT token. Q4. Define Filters and Segmentation in Spring Security. Q5. How one microservices authenticate another microservice with jwt? Q6. What is a functional interface? Q7. Give an example of a java interface which uses a functional interface. Q8. Write a code to implement Runnable using lambda. Q9. Which is springboot default server and How to use another server in srpingboot? Q10. What are profiles and how to use them? Q11. How is bean Injection working? Q12. How to inject a specific bean of the same object? Q13. How to set up a discovery server? Like Eureka Q14. What is the use of @Primary annotation? Q15. Which method can we use to check if a service is up or not? Q16. How would you externalize a microservice? Q17. What is the default port of springboot? Q18. What is an optional class and its use? Q19. Optional.Of() vs Optional.ofNullable() Q20. Write sql query to return 2nd highest salary. Q21. What is a Rest template?
What are SOLID principle? What are the differences between REST and SOAP APIs?
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