Interviewer directly jumped into screen shared code writing. He gave a problem statement on hash set. Asked some questions on polymorphism, asked to write basic code around it, then went onto solid principles. HashSet qestion was difficult
Java Software Developer Interview Questions
4,200 java software developer interview questions shared by candidates
In every interview process: why you wanna join Picnic?
breadth first search
Generics (Sets, Lists, Maps, Trees), Threads, Iterators
There were many rounds and all were going smoothly. They asked everything in java from java features to spring boot framework. First round was coding round which was 3 hr assignment like read data from CSV/Excel file and and after calculation you have to write back to the CSV file.
core java and spring questions
What is your familiarity with OOP Concepts?
I could not attend the interview
Java concepts,agile methodology, Springboot related questions.
Core Java-Collections, Serialization, Multi-threading, OOPS concepts, SOLID Principles, Design Pattern with implementation, Spring Boot, JPA, HIbernate, SQL queries, AWS Services- Lambda, Fargate, Docker, Kubernatives, S3 configuration. Coding - Arrays, Strings, LinkedList Java Stream lambda for custom class
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