-- Regards César Hernández Java Champion <https://community.oracle.com/community/java/java-champions> Twitter <https://twitter.com/CesarHgt>/ Blog <http://cesarhernandezgt.blogspot.com/>/ Linkedin <http://gt.linkedin.com/in/cesarhernandezgt/en>/ slideshare <http://slideshare.net/cesarhernandezgt/>/ GuateJUG <http://guate-jug.net/> / JEspañol <http://www.jespanol.org>/ tFactory <http://tfactory.github.io>/ TheNullPointers <https://www.facebook.com/nullpointersband/>