i want an expert lessons in java just expert if you could sent them to me

Question

help

Answer 1

A simple web search could get you the answer your looking for. Go to the source and read the documentation of the libraries.
https://docs.oracle.com/en/java/

Answer 2

You are asking someone to go out of their way to present content to you, abd you provide nothing in return. Rethink your question or how you have asked it.