Thank you for the reply Since you yourself mentioned that these are basic questions , why cant u just post a small answer I indeed can look into books for which takes time , only for that reason people post in forums to get quick answers and indeed i program in C++ and only for a small task i need these answers If you know the answer please do answer Regards View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4050678#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...