java programming, oops, collection framework, Dbms
Software Developer Java Interview Questions
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What is difference bt hashmap and linkedHashmap?
1. so let's say for a use case you need to pick up a list implementation and you have to pick between arraylist and link list which one you will pick and why 2. if we have to insert at the head or the tail then i would accept that okay that link list will be faster because you just have to switch the pointers but if you want to insert let’s say in the middle how many operations you would need in link list versus in array list for in the middle 3. in array list we have to shift the elements so you think the shifting of the elements will happen one by one like one element at it 4. can you explain to me how hashmaps work 5. and the worst case what will be the complexity 6. let’s say we have to use employee class object as a key in the map what we have to take care of 7. are the fields in the employee class mutable or should they be immutable 8. is the hashmap thread safe 9. what alternatives do we have we can use synchronized map we can use concurrent collections in which we have a concurrent hashmap as well 10. so synchronized map versus concurrent hashmap what was the difference 11. in a concurrent hashmap at a given point at the same time let’s say how many threads can do a put operation 12. what is the volatile keyword .
Questions on SDLC, Core Java - Multi threading, Exception handling, collections, Java 8 features, Abstract methods & interfaces; Maven , Jenkins, Unix Shell Scripting, basic questions on AWS, SQL Commands, Spring boot - bean scope, DI, Annotations, properties file; JPA hibernate, Spring MVC architecture. Managerial round : Roles & Responsibilities, achievements, interests, questions on how well we can operate under pressure.
NA
create a spring app that structures data into a tree
Question on Core Java, Design Patterns, Linux and Web Services
Où sont situés les .class après compilation?
First tech interview: - Working history - Java-programming related questions - Software architecture related questions 2 hour workshop: - Coding a tiny application (without the interviews watching) and then showing how that application works, discussing the design, and extending it a bit.
First assessment was IQ/English questions followed by a couple of HR questions you need to record your answer to. second assessment was problem solving questions like string processing, greedy algorithm
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