Knowledge of junior Java developer?

Question

Java

The question is similar to the same one, but about PHP : what kind of knowledge is expected from a junior writing in Java?

Answer 1

Know how to google!

Answer 2

How do you understand junior, middle (developer), senior, and is there a fundamental difference between these concepts in the web, embedding, game development and other programming?
https://www.google.com.ua/search?q=site%3Atoster.r...