How do I use this package?

[u9g]

I'd like to use this but there are no explanations anywhere how to use it

[TheMode]

You need to run the main class: https://github.com/TheMode/Paxy/blob/master/src/main/java/fr/themode/proxy/Main.java
And connect to localhost:25566 (assuming you have an offline server listening to :25565)

The software is more intended as a showcase, as I was trying to bring up the benefit of reusable buffers for Velocity

Only the chat packet is modifiable right now, but adding more shouldn't be an issue.