java - Solutions to implement Observer pattern to my application -

i want implement observer pattern application.since code large sum problem. so, have make application manages relations between boss , employees. this, have 2 separate gui both boss , employee.

when lunch application create 2 loggins , 1 boss , 1 employee. if loggin boss succesfull create new gui boss frame

if employee loggin successfull new gui employee show up. want do, add new gui employee created (wich observable) observer (gui boss). here of code explain better:

//in application.java public static void main(string args[]){     ........     loginboss lb = new loginboss(contrb);  //contrb boss controller     lb.setvisible(true);     loginemployee le = new loginemployee(contre); //contre employee controller     le.setvisible(true); }  //in logginboss.java //after check if it's ok create new gui boss guib = new guiboss(contrb,boss);  //contrb boss controller passed loggin boss guib.setvisible(true);  //in logginemployee.java ///after check if it's ok create new gui employee guie = new guiemployee(contre,employee); guie.setvisible(true); //now whant add guie gui boss observer, guie.addobserver(guib); 

if have ideeas please, let me know.i'm sorry english.

take @ link.

if guiemployee extends observer pattern, should make like:

guiemployee watched = new guiemployee(var, var);  watched.addobserver(guib);  watched.changesomevalue(value); 

in changesomevalue method,inside guiemployee (watched in example) must include these sentences notify observers:

setchanged(); notifyobservers(value); 

a call notifyobservers nothing until setchanged called. more info, take here.