CareerCup

I am trying little bit if anybody want to add and correct it will be my pleasure.

class EventStore {
Client client; // client handle stored when connection established with calender

list <event> myevents;
Addevent(id); // event identify by unique id
RemoveEvents(id);

Callbackfunction(id) {
occuredevent = getevent(id); // we can use hasing to get event from id
client.send( occuredevent);
}

};

class Event {
id;
Eventstore es;
AddAlarm();
RemoveAlarm();
notify() {
es.Callbackfunction(id);
}
};

class Alarm {
Event event;
startAlarm(e) {
event = e;
// start timer
}
TimerEnds() {
event.notify();
}
}


////////////////////////
client side

class Client {
EventStore ev;
EstablishConnection() {
ev = getEventStore()
ev.setclient(this)
}
AddEvent()
{
Event event = new Event;
event.details();
event.Addalarm();
ev.AddEvent(event);
}
void send(event) {
static Window w =NULL;
if( w = NULL) {
w = new Window;
}
w.display(event)
}

};

I am thinking of using observer pattern for notifications....
main entities/classes:

ReminderMessage{public string message {get;set;} }
ReminderPopup {/* represents popup message contains OS info*/}
CalendarEntry{public DateTime time; public DateTime reminderTime; public ReminderMessage message;}
Calendar { private CalendarNotificationManager notificationManager; private SortedHashSet <CalendarEntry> entries;
public void AddEntry(CalendarEntry entry){}
public CalendarEntry [] GetEntries(DateTime calendarDate){}
}

class CalendarNotificationManager{
	public void AddEntry(CalendarEntry entry){}
	public void AddListener(NotificationListener listener);
	protected void NotifyAll(){}
	protected NotificationListener [] listeners;
}

public interface NotificationListener
{
	public void Notify(ReminderMessage message){}
}

fill in the blanks and I would request the senior Devs to please comment

abcd