Java flatfile storage and iteration.

Question

I'm coming from a viewpoint of working as a LAMP stack developer. PHP allows for the use of multiple file storage options in place of a database. what are some best practices in java and which file types are preferred?

Answer 1

I met with YAML (.yml) structured configuration files. The JSON (.json) support constantly making noise around java, it was announced to be widely supported in Java9, but was told already, that will not be included yet, maybe in Java10 or later on. You should check these two first, I think.
In most cases however, I use my own flatfile formats I made/make myself for given purposes.