java to fetch pdf context

http://www.javaworld.com/javaworld/jw-06-2008/jw-06-opensourcejava-pdf-renderer.html

http://wou.pixnet.net/blog/post/6659915-%E7%94%A8java%E4%BE%86%E8%AE%80%E5%AF%ABpdf%E6%AA%94%E6%A1%88