Reference:
https://jaxp.dev.java.net/
http://en.wikipedia.org/wiki/Java_API_for_XML_Processing
http://www.oreillynet.com/pub/a/oreilly/java/news/javaxslt_0801.html
http://www.ling.helsinki.fi/kit/2004k/ctl257/JavaXSLT/Ch05.html
http://www.ibm.com/developerworks/xml/library/x-injava/index.html