Search before asking

• I have searched in the issues and found no similar issues.

What would you like to be improved?

There are some places in the readme file that need to be updated and enhanced:

1. The spark version supported by mixed table
2. There are too many ways to build a project, and the ones with less frequent use need to be reduced, and the tabular format is used to make it clearer
3. How to build a project using different jdk versions

How should we improve?

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Subtasks

No response

Code of Conduct

• I agree to follow this project's Code of Conduct