It's not a modern Java, it's an antiquated Java. It might aim to be modern, but Go is far from being a modern programming language, even if it was implemented in modern times.
Go will never have functions (well, this is a class in Java) like RequestProcessorFactoryFactory.RequestSpecificProcessorFactoryFactory, an actual apache xmlrpc server class name.
Go is a modern language, in every sense of the word. You may not like it, other languages might work better for you or for certain situations (which is great, it really is), but don't pretend it is antiquated or created in ignorance.