28.2. Example of a Client

• First, declare the CallbackHandler to use. It can be a simple command line prompt, a dialog, or even a login/password to use.

  Example of CallbackHandler that can be used within JOnAS:

  CallbackHandler handler1 = new LoginCallbackHandler(); CallbackHandler handler2 = new DialogCallbackHandler(); CallbackHandler handler3 = new NoInputCallbackHandler("jonas_user", "jonas_password");

• Next, call the LoginContext method with the previously defined CallbackHandler and the entry to use from the JONAS_ROOT/conf/jaas.config file.

  This example uses the dialog callbackhandler.

  LoginContext loginContext = new LoginContext("jaasclient", handler2);

• Finally, call the login method on the LoginContext instance.

  loginContext.login();

  If there are no exceptions, the authentication is successful.

  If the supplied password is incorrect, authentication can fail.