Round VI

write singleton pattern. explain. how will you create a thread safe singleton pattern?

diff between serialization and externalization.

Talk about stack.

what is the use of linked list?

use any data structure and implement stack. (i did use arrays and explained push() pop())

implement linked list using Arrays. (i did come up with a logic and explained to him, he asked more on this.)

difference between pass by value and pass by reference. How it is w.r.t java?