Infosys Senior Software Developer interview questions

Basic Java Questions, SQL, Microservices

What is stream API, what are the features of java 8 explain all one by one. 3 question based on stream API like filter employe of salary from given a list of Employee class and others are related to this only. Functional Interface in detail, which FI is used stream.map() and filter(). Design an API from Scratch. How microservices communicate each other. How to add validation in an API. what all the status and error code used in Rest API Jenkins , Job Scheduling , how to handle fault?