HARMAN Interview Question

Questions 1st round What is static class What is singleton Different between static and singleton Scenario for static class Programs Generic SQL to fetch highest salary String reverse in recursion Duplicate occurance in list 2nd round What is rest, how it functions JSON data types Authorization and authentication, how it handled in your application Serialisation What is use of serialversion id and why declaration required when JVM provided by default. What are cookies and how to create it.