1. Differences between Arrays and Collections?
2. What is Collection framework?
3. What is Collection?
4. Differences between Collection and Collections?
5. What are the methods present in Collection interface?
6. Differences between ArrayList vs Vector?
7. Differences between ArrayList and LinkedList?
8. Differences between List and Set?

9. Differences between HashSet and LinkedHashSet?

10.Differences between HashSet and TreeSet?
11.Differences between Comparable and Comparator interface?
12.What is Map interface?

13.Differences between HashMap and LinkedHashMap?
14.Differences between HashMap and TreeMap?
15.Differences between TreeMap and Hashtable?

16.Types of Cursors in java?

17.Types of Data Structure in java?