Added JAXP code
Minor fix
Import fix
Upgraded maven-parent to Java 1.7
Added data strucutre code
Added DFS code
Completed arrays and strings interview questions
Added linked list practice code
Changed one impl to use Bit operations
Rewrote linked list code to use own impl
Tower of Hanoi code
Renamed
Completed up to Object Oriented Design
Merge branch 'master' of https://github.com/abhijitsarkar/java