I´m sorry for my bad english.

I need help about jar.

I´m deploying an application with java bluetooth.

I want that when is running my application can update it.

First I download a file .jar.

When is running my application and I click a button I can download other file a .txt for example.

I need can read the file .txt but i don´t know how to read this file outside of my .jar.

Can you help me please?

thank you.