How to return orElseThrow in a same condition with ifPresent using Java 8?

Question

I have a Java 8 code below using ifPresent, I want in the same condition to use orElseThrow chatSessionStore.get(group) Already returns a Optional object.

@Override
public void forwardMessageGroup(String group, ChatMessage message) {

    chatSessionStore.get(group).ifPresent(chatProxy -> chatProxy.sendMessage(message));

}

Any tips?

Answer 1

I think what you want is simply:

chatSessionStore.get(group).orElseThrow(
      () -> new RuntimeException("No group")
).sendMessage(message);