1) What is the difference bewteen monolythic and microservices. what is the advantage? and challenges in microservices? 2) how does the microservices communicates with each other? 3) Can you explain multithreading with live example from your experience? 4) What is the advantages of object injection? 5) what is cirulat dependency? -> How can we resolve circular depenency? 6) J2EE multi threading or single threading? -> Explain how it works in servlet. 7) Have you used generics? 8) Can you maintain the order in arraylist? 9) how do you change the order in arraylist? is there any easy way to do in java8? 10) how do you sort in arraylist?