I somewhat respectfully disagree. Java as a programming language, conceptually is not huge. It does have a huge API library. However 'experts' should be able to

I somewhat respectfully disagree. Java as a programming language, conceptually is not huge. It does have a huge API library. However 'experts' should be able to make it concise - as in what is the object or goal of this lib/package. so the the reader knows 1) whats possible in java 2) if they need to dig deeper they know where to look. I guess to me the idea is not to know everything, but to know whats possible and where to look.