Cognizant Programmer Analyst Trainee interview questions

Tell me about yourself. Explain a little bit about anyone project mentioned in the resume. [ I explained about my desktop application project ] What is function overloading and can we pass primitive type and similar wrapper class to implement function overloading [ He also gave me a snippet and asked its output ] Difference between function overloading and function overriding Why do we use keyword static in java? What do you mean by autoboxing [ I haven’t heard this term so he explained to me about it with proper examples ] What is abstraction and how to achieve it? What is the difference between abstract class & Interface? What is a Functional Interface? Difference between final, finally and finalize What are the different types of exceptions in java? [ Checked & Unchecked ] What happens when we put a return statement in a try block, Will the final block be executed or not? He asked me whether i know about collections then I said common data structures and algorithms I know but not in too deep. What is HashMAP and difference between HashSet & Hashmap