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Sr Java Developer Interview Questions
5,546 sr java developer interview questions shared by candidates
1. Explain Collection framework in Java? 2. Java 8 Features 3. Sorting array elements ( Based on Comparator & Comparable) 4. OOP Concepts 5. Array List vs Linked List 6. Sort map by value 7. Internal Working of HashMap 8. Serialization 9. map() vs flatmap() 10. Add elements of List of List using Steam API 11. IOC & Depenedncy Injection 12. What is profiles and actuators in Spring Boot? 13. @Controller vs @RestController 14. @Bean vs @Component 15. Explain Auto configuration and Dependency management feature in Spring Boot 16. Get nth highest salary from employee table
What is JIT? What is PC Register? What is cohesion? What is Is-a and Has-a relationship? How classes from packages outside Main class will be initiated? One SQL question.
Questions are mainly on Core java for a Java Developer position.
1)Runnable vs callable 2)Solid principle 3)Volatile keyword 4)How to create Immutable class 5)SCP 6)Optional in java 8 7)predicate interface 8)Fail fast vs fail safe 9)threadPool,threadlocal 10)LinkedList 11)Mediator Design Pattern
Dessign patterns used in your project?
what is the memory model in Java 8
2nd round - 1) How will you make a class immutable. 2) What is race condition in HashMap.
write code for singleton
Architecture of your current company ? Where are the service beans and UI servers. How are the servers maintained? How to detect the exceptions which don't affect the system , but are yet in the log
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