Is an embedded Jetty Server guaranteed to be "ready for business" when the call to Server.start() returns?

I am having trouble finding any information about whether an embedded Jetty Server is guaranteed to be fully initialized and ready to receive requests when the call to Server.start() returns.

Nor have I been able to find anything conclusive by debugging.

If the server might still be initializing itself when the call returns, is there any way to register a callback so that 开发者_JAVA技巧I can be notified when it is indeed ready for action?

Yes, when returning from Server.start() the server is ready.

You can register a LifeCycle.Listener using Server.addLifeCycleListener(listener) to get notified of startup or shutdown events. If you look at the source of Server.start() you'll see, that it calls Listener.lifeCycleStarted() at the end.

not a complete answer but maybe it depends on whether the servlets may or may not "load on startup"?