What is the best language to write the backend in?

Question

Backend

I write applications for Android. Now I created a project where the server part is needed. And so some people say that java is slow for the server side and that it's best to write back on the pros. What do you say? In which of these two languages ​​is it better to write back? And what is the best way to write the server part?

Answer 1

Ask those people if they will analyze your asap coredumps for free 24/7/365
You need to write in the language that you know best