What is the difference between Dynamic binding and static binding, Can we have private constructor, can we overloaded Main method, Difference between Hashmap and Tree map, Difference between arraylist and linkedlist, Usage of transient keyword, In SQL- Why we use group by ? And ask me to write a query where i have to combine two tables(normal inner join and group by clause), second he ask me various joins , and when to use subquery and when to use joins
what is an abstract class?
Design patterns
DB: 1. Design two SQL tables, that relate to each other, "book" "bookshelf" 2. Write a SQL query to tell me all of the books that belong to bookshelf id 2,3 3. Write a SQL query to tell me all of hte books that belong to any bookshelves that are named "cool_bookshelf"
What is Garbage Collection?
Program a Hashmap. Code has to be in JAVA and compile.
What do you know about the company?
I was not able to explain the workflow
questions from OOPS concept and Threads
Spring boot and microservice, SQL queries
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