Top 10 Websites for Advanced Level Java Developers

1. Stackoverflow


Stack Overflow is a question and answer site for professional and enthusiast programmers. It's 100% free, no registration required.  

url:https://stackoverflow.com

 2.Dzone

A lots of developers share their blog articles. 
Url:http://www.dzone.com 

 

3.GitHub
 Build software better, together.
Url:https://github.com/

4.LeetCode

LeetCode OJ is a platform for preparing technical coding interviews. Pick from an expanding library of more than 190 questions, code and submit your solution to see if you have solved it correctly. It is that easy!

Url: http://leetcode.com/ 

 

5.HackerRank                                                                                                

   With the world's fastest growing developer platform, we are on a mission to     make the world fast by making hackers the best at what they do.

Url:https://www.hackerrank.com/

  6.CodeChef

Join Online Programming Contest. CodeChef hosts Online Programming Competition, Programming Contest and Computer Programming.

Url:www.codechef.com