What is privat24 written in?

Question

Java

Hello.
Who knows (there are a lot of people here, maybe there will be one from PrivatBank), what the whole privat24 online banking system is written on ? PHP + JS and so on. It is interesting to know which database is used, which server is worth it.
I'm asking this question out of interest in JavaEE. I've been doing this quite recently. Who knows any decent JavaEE projects? you can see the link (for example). Would you like to see what it all looks like? They say around that JavaEE is used in highload, in large corporate solutions, and so on, but somehow I myself have not met it.
Thank you.

Answer 1

Odnoklassniki is written in java, for example .. linkedin too.

Answer 2

Some parts of the kernel are written in Erlang and there are plans to rewrite the entire kernel on it.