Java tutorial
package com.google.gwt.tok.client.handler; import com.google.gwt.event.shared.EventHandler; import com.google.gwt.event.shared.GwtEvent.Type; import com.google.gwt.tok.client.event.ConnectionCreatedEvent; import com.google.gwt.tok.client.event.ConnectionDestroyedEvent; import com.google.gwt.tok.client.event.SessionConnectedEvent; import com.google.gwt.tok.client.event.SessionDisconnectedEvent; import com.google.gwt.tok.client.event.StreamCreatedEvent; import com.google.gwt.tok.client.event.StreamDestroyedEvent; public interface SessionHandler extends EventHandler { public final static Type<SessionHandler> TYPE = new Type<SessionHandler>(); void onSessionConnected(SessionConnectedEvent event); void onSessionDisconnected(SessionDisconnectedEvent event); void onConnectionCreated(ConnectionCreatedEvent event); void onConnectionDestroyed(ConnectionDestroyedEvent event); void onStreamCreated(StreamCreatedEvent event); void onStreamDestroyed(StreamDestroyedEvent event); }