几篇不错的博客

http://blog.csdn.net/daheiantian/article/details/6243993

http://blog.csdn.net/zjuylok/article/details/4152864

http://www.lkn.ei.tum.de/arbeiten/faq/man/JAVA-tutorial/native1.1/implementing/method.html

http://www.iteye.com/problems/55207

http://mindprod.com/jgloss/socket.html#DISCONNECT

http://www.cnblogs.com/luvi/archive/2008/10/10/1307843.html

http://blog.csdn.net/GEOLO/archive/2011/04/22/6340684.aspx

http://www.shiningboys.cn/293.html