Antra interview question

Technical ---------------------------- 1) Final, Finally & Finalize 2) Method Overloading vs Method Overriding 3) Abstract Class vs Interface 4) Polymorphism 5) Java Collections 6) List 7) Set 8) ArrayList vs LinkedList 9) Access Modifiers 10) Join and Unijoin 11) Left join and Query on left join 12) Normalization Skype -------------------------- 1) String replacement program 2) List Sorting 3) Concepts of Normalization 4) Query: Max salary from table If your solution is not efficient then he will ask you for an alternative approach.