A School of Online Business

Question

Earning money has never been easy. But since the dawn of technology, it has been making life easy and hence it has also made money earning very easy. Online money earning has a growing popularity these days because you can make huge sum of money in a very little span of time and also there would be no manager to boss you and whom you have to fear. You can do the job whenever you want and wherever you are comfortable. All you need to possess is basic computer knowledge and must be familiar with using internet thatu2019s it. You have no other way to earn money with such an ease as you can through internet. Trust me! Go online and start making money today. For more details please visit http://www.indianbillgates.com/

Answer 1

Since you cannot access other sessions besides the current one, you will need to store the current users somewhere other than the session. Here is an option.
public class User implements HttpSessionBindingListener
   private String userid ;
   private MyServlet servlet ;
   public User(Stirng userid, MyServlet servlet)
        this.userid = userid;
        this.servlet = servlet ;
   //assume standard accessor methods.
   public void valueBound(HttpSessionBindingEvent ev)
     getServlet().currentUsers.addElement( getUserID() );
   public void valueUnBound(HttpSessionBindingEvent ev)
     for(int i = 0; i < getServlet().currentUsers.size(); i++)
         if( ((User)getServlet().currentUsers.elementAti)).getUserID().equals( getUserID() ) )
              getServlet().currentUsers.remove(i);
              break ;
public class MyServlet extends HttpServlet
    public Vector currentUsers ;
}Then, you can access the servlets currentUsers vector for a list of current users. Readup on HttpSessions and the HttpSessionBindingListener classes.
You will put the person's information in a Bean and then store it in the session when they logon/return/etc. The Listener handles the rest.