abstract class
Junior Java Developer Interview Questions
3,910 junior java developer interview questions shared by candidates
Core OOP concepts, Database, web services, ajax, apis
1) tell me About java technology? 2) tell me about concept ofoops? 3) what is inheritace and its types? 4)what is final modifer ? where should we use? 5)what is collection? what is the diff b/w collectin and array.
Question about basic OOPs concept & SQL Query.
How to you check if a string is a palindrome? What are the 4 OOPs? What is beneficial about an arraylist over a linked list, vice versa?
Tell me about yourself? Collections in Java?
Spiral order traversal of a tree.
I was asked to design a database based on the requirements given by the interviewer and had to write some queries too. I was asked an object oriented design problem too. Details about Performance Testing. Explain dynamic, divide & conquer way of programming. Implement fibonacci using iterative, recursive and dynamic programming. Explain merge sort. How it uses divide & conquer programming. Circular linked list implementation based on a problem given. Differences between linked list and array list. Differences between C++, Java and Python. (I didn't revise C++ much, so couldn't answer virtual functions in detail) Difference between Future and Callable. Explain Executor Services.
What is the difference between a vector and arraylist?
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