What is difference between hashset and hashmap in java?
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What advantage do java's layout managers provide over traditional windowing systems?
Why arraylist is not synchronized in java example?
What are the 5 types of research methods?
Suppose there is an Online shopping cart application having different objects like Cart, SelectionItem, Billing, COnfiguration, Authentication, Authorization, PersonalDetails etc. Out of this which one can be made a singleton pattern and why?
Are arrays static in java?
How do you achieve singleton?
10. class Nav{ 11. public enum Direction { NORTH, SOUTH, EAST, WEST } 12. } 13. public class Sprite{ 14. // insert code here 15. } Which code, inserted at line 14, allows the Sprite class to compile? a)Direction d = NORTH; b)Nav.Direction d = NORTH; c)Direction d = Direction.NORTH; d)Nav.Direction d = Nav.Direction.NORTH;
What are the three types of design patterns?
What is an escape character in java?
What are the super most classes for all the streams?
Explain static nested classes ?
What is lifetime variable?