Infosys Senior Associate Consultant interview questions

In the start of the interview, they asked about the years of experiece I've in the banking domain. But I had none. Out of the 45 mins interview, for the 30 mins they focused on the Java and features of the java. Rest was related to the spring boot. Java Topics -> Functional Interface and Lamba Expressions, Streams API, DateTime API, Stream API (mainly the groupingBy and the partitionBy feature implementation), String (Immutability) and can we create out own immutable class which behave like the String in terms of immutability. Spring Boot -> What was the need of the SpringBoot, namedQueires, pom.xml, server change from tomcat to some other.