Java oops concepts, what is multithreading, internal Architecture of jdk, string buffer vs string builder, comparable vs comparator, failsafe vs failfast iterator, what is functional interface, checked vs unchecked exceptions, can we have null key in hashmap.
why we use git stash command?
What is the use of profiles in springboot project
Scaling the backend for a 100k users
How did you do indexing in rds
Java collections basic
Questions on Java, SpringBoot, Microservices, REST, etc.
Linked list vs arraylist Java8 features Spring boot annotations Rest controller vs controller Api gateway Micro services architecture Spring cloud
Sql queries
Questions about database queries and depth of knowledge and technologies in JAVA. They wanted experience with Spring and Hibernate and agile.
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