Pregunta de entrevista de Tata Consultancy Services

1)Features of java 8 2)write program using lambda expression 3)stream api program to sort employess using their city 4)How do you manage memory leakage in your java application 5)features of spring 6)Rest controller vs controller 7)concurrent hashmap 8)which collection do you use in your current project 9)steps to create spring application 10)how to change embedded server in spring boot 11)sql left join 12)hibernate vs jpa 13)can we use lambda expression without functional interface