Part-1 List Interface

Topics:

1. What is Collections Framework?
2. What is the hierarchical diagram of Collections Framework?
3. What are the unique characteristics of List Interface?
4. What is the difference between generics based and non-generics based collections and which one is used post jdk 1.5?
5. Why it is being said that Collections Framework provides an architecture to store and manipulate group of objects?
6. In how many ways can we traverse Arraylist object?
7. How can we convert array to an ArrayList or vice versa?
8. What are the most commonly used methods of ArrayList API?
9. What are the unique characteristics of ArrayList(List Interface implementation API)?
10. What does Insertion order, Null-ability and Duplicates factor mean as far as List Interface implementation of APIs is concerned?
11. Do we get null pointer exception if ArrayList object carry multiple or single null value/values?
12. In how many ways can we traverse LinkedList object?
13. How List Interface implementation classes(ArrayList, LinkedList, Vector and Stack) differ from each other?
14. When shall we use List Interface implementation classes in projects?
15. Is Object the topmost root API, Iterator the parent interface of Collections interface and what are the child interfaces and child API’s of Collections Interface?
16. On which very data structure. ArrayList and LinkedList API’s are based upon?
17. Is Iterator, ListIterator and the enhanced for loop used to traverse ArrayList or LinkedList API object?
18. How can we convert ArrayList to LinkedList object or vice versa?
19. What are the most commonly used methods of LinkedList API?
20. What are the unique characteristics of LinkedList API which make it different from all other List, Set and Map interface implementation API’s?
21. How do we use ListIterator Interface with all List interface implementation classes and does ListIterator API help us access objects in both forward as well as backward direction?