What exactly is the last piece of code doing?

What exactly is the last piece of code doing?

References

Reference NO 1

http://stackoverflow.com/questions/18029451/what-exactly-is-this-segment-of-code-doing

Reference NO 2

http://thematrix101.com/matrix/faq.php

Reference NO 3

http://www.npr.org/blogs/codeswitch/2013/06/21/193881290/jeah-we-mapped-out-the-four-basic-aspects-of-being-a-bro

Reference NO 4

http://www.forbes.com/sites/insertcoin/2013/06/17/coming-to-terms-with-the-difficult-ending-of-the-last-of-us/

Reference NO 5

https://support.google.com/webmasters/answer/1708844?hl=en

Reference NO 6

http://www.jwz.org/doc/java.html

Reference NO 7

http://www.nytimes.com/2013/07/22/business/in-climbing-income-ladder-location-matters.html?pagewanted=all

Reference NO 8

http://www.vg247.com/2013/06/14/console-wars-youre-going-to-buy-an-xbox-one/