1) why we use static keyword 2) what is the benefit of functional interface. 3) why we are using IntStream 4) Why we are using interface instead of abstract class 5) What is the jvm architecture.
Senior Java Developer Interview Questions
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Q: How is the hash map stored internally in Java?
Java , spirng , microservices
Spring framework mvc
Interviewer asked questions on core java, collections, SQL Joins, Design patterns. Some scenario based questions but I did not understand since the interviewer did not that good english. This was though some staffing agency.
Write a program to brake singleton pattern and how to prevent it. Wirte a program to count the number of occurrences of characters in a String. Write circuit breaker pattern in case of microservices.
Round1: Focus on Microservices: 1. Code for Feign Client Interface 2. Code for Rest Template 3. POST API with all annotations and detailed code. 4. Java8 Features Round 2: 1. String s =null; Sout(s); Sout(s.lenght); What would be the output? 2. How do we prevent nullpointer in above scenario? 3. Java8 Program: Return first employee with a salary greater than 100000 . If no such employee exists, then null is returned. 4. Kafka Partitions and Topics. 5. AWS services used? Round 3: Basic HR questioner.
The design patterns of microservices
Core java, spring, design patterns
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