L1: 1.static binding vs dynamic binding 2.write singleton class 3. If we have list in singleton class how we avoid accessing it outside the class. 4. how to make singleton synchronized 5.java 8 - functional interface and stream API 6. write a program in java 8 max sal of employee 7.@variable & @modifier in JPA 8. why we use marker interface 9. how spring security works, authentication vs authorization 10. what is serialization? why we use is 11. what is transient 12. what is marker interface 13.internal implementation of hashset. L2: 1.aggregation in mongodb 2. mongodb groupby query 3. JPA integration with mongodb 4.microservice architecture 5. kafka producer consumer problem 6. project description. 7. agile methodology 8. Project build related question. 9 . Development process related questions
Java Senior Interview Questions
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Basic Java and Spring questions
They asked about spring, springboot, hibernate and microservices. And how did you implemented them in your projects.
OOPs Concept
What is the functional interface in java
Java Stream API, Funtional Interfaces, SQL queries AWS S3, lambda
Explain about your current project
What's static, final, volatile etc. Some I didn't understand, other was very basic, as for students - eg. how would you sort something
Based on collections in java. MCQ on java basics with programs
Microservices design patterns like saga and circuit breaker
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