JPMorganChase interview question

- differences between java 7 and java 8 since my experiences included transition from java 7 to 8. - I was using java 11 at that time, so they asked me about "var" keyword and its advantages over explicitly mentioning the actual type of variable. - Map.of() what is the meaning/advantage of using it? Immutable. Ok, what is the meaning of that etc. The other questions, I don't remember.