> PresenceService o = (PresenceService)aClass.newInstance();
> bind(PresenceService.class).to(o.getClass());
Variable o seems unnecessary, as it is only used to get the class of
MemoryPresenceService, which you already have in variable aClass.
Instantiating the class unnecessarily may lead to bugs/performance
issues. I recommend doing this instead:
try {
Class<PresenceService> aClass = (Class<PresenceService>)
Class.forName("presence.service.MemoryPresenceService");
bind(PresenceService.class).to(aClass);
} catch (Exception e) {
....
}
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