B4J Tutorial Gemini AI example using REST API (UI)

This is a simple example to make API call to Google Gemini using OkHttpUtils2 and Json libraries.
Streaming is not implemented.
Get API Key: https://aistudio.google.com/api-keys
Learn more: https://ai.google.dev/gemini-api/docs/quickstart#java

Basic code is provided by Gemini but I added features for:
1. reading API key from text file and
2. save the response to a text file.

GitHub: https://github.com/pyhoon/Gemini_UI