How can manage session in javafx desktop application

Question

i have created a javafx desktop application and  my application also consume  restWebService for login and logout puspose. now how i can maintain session of any particular user??
please if u have any idea let me know??
thanx in advance.

Answer 1

With the setup you have described, you don't need to maintain much of a session like in a traditional browser or a web app server scenario. 
WIth a traditional web application, when a login authentication passes, normally a cookie is set in the browser to indicate that a session has been established and is cleared on logout to indicate that the session is over.  When the browser client talks to the server it sends the cookie across to the server and the server (using something like the servlet api) decodes the cookie to determine the session and makes use of appropriate session state to access a store of session related data which it eventually just throws away on logout or on session timeout.  The cookie is normally a random piece of data which forms a unique id for the session and is normally generated on the server.
If you are using rest apis then they should be coded to be stateless, so there is no session involved, every request to the server is self contained and contains all the information required to authenticate the user.  (e.g. the user/password hash is passed every time).  Sometimes a variant will be used where a token is passed, for example an oauth token, representing delegated authentication from another service.  But you likely don't need to do that and just passing the full auth information everytime is sufficient.  The server itself also maintains no state, it just does the auth based on the credentials passed with each request and then performs what ever action it needs to create and return the resource requested.
So really, all you need to do is to:
1. Prompt user for login credentials (user/pass).
2. Hash the pass and make a rest call to the server for validation (http basic auth over https could be used for this).
3. If the auth passes, then store the current user/pass hash as application data somewhere (e.g. members of your application class instance).
4. When you need to make another rest call, query the application instance for the user / pass hash and include that in the call.
5. When the user logs out, clear the user / pass hash from the application (set it to null).
6. Show the login prompt again for the user.
Note that using other communications systems (such as akka, hessian, spring remoting etc), may be a bit simpler for some kinds of JavaFX client/server applications than using REST.