eBook to JAR format for mobile phone

Question

Is there any way I can convert my eBooks to .jar files? Even if the "eBook" is simply a .txt file. (Calibre can convert between various eBook formats, including .txt and HTML. It has the best converter I've seen yet; it supports CSS, 'heuristics', and many more.)

Apparently, mjsoft.nm.ru has what I'm looking for, but it's rated as a bad website by WOT (malware, etc).

EDIT: I just realized I could run it in a VM! Still looking for solutions, though. This page seems to list another, but again, I don't know the credibility/trustworthiness of these solutions.

I looked at Calibre (v0.7.42), but it doesn't support this.

Answer 1

Will this TequilaCat tool help you?

Quick start notes from there,

1. Download program archive to a PC computer running Windows or Linux+Wine,
   unpack it and run the Shell.exe
2. In this shell, select your phone model, set up fonts, options and all things configurable
3. Add e-books from computer disk
   (if your phone does not support reading books from phone flash card/internal memory)
4. Click "Create Java book"
5. Install JAR file (Java book) onto the phone, like any app or game,
   run it and you'll see the book text.

There is also a user manual reference on the same page.