Difference between full abstract class and interface? How to find differentiate file and directory in a class structure, write a class? Where do you see yourself in 5 years? Give me your introduction in technical terms? Explain me your one backlog? Do you use method overriding in your previous project? Write a query to find duplicated elements? What different keywords you use in SQL? Why to use Hibernate? Why to use JAXB for XML? Have you used JSON? What are difference between error and exceptions? How do you handle exception in jsp page? How do you handle exception in jsp page in your previous project? How do you debug an issue, taking example of auto populating functionality, what kind of issue it is showing?