Round 1:
Dsa
Longest substring without repeating characters
Java:
Association and composition
When do we use stream when not to use stream
Whats the most used data structure by you? When should we use it, when not to use it
If we have our required value in application.yml how to access those values in our test files
Solid principles
Whats reactive java, when should we use it?
Syntax of retry for webclient
IO file handling
Multithreading
If we have a file in a subfolder we know the path of main folder, how can we find the file in java
Streams parallel, how does it work internally
Findfirst vs findany in streams
Stub vs mock
Peek method for collections when its used
How do we retry in reactive java
Observer vs observable
Functional interface? Supplier vs consumer?

Not from my interview, heard from a friend
If we have a linked list where 0th node and n-1th node is a pair, 1st node and n-2th node is a pair and so on, find the highest pair sum in the linked list

Verdict: Rejected