How to send a voice note file to a Telegram group in Java

Using the WhatsMate Telegram Gateway REST API

Posted on June 29, 2022   Share on Facebook Share on LinkedIn Share on Twitter Share on Google+

Last reviewed: March 16, 2025  

This article shows you how to send a voice note file (e.g. an OPUS file) to a registered Telegram group in Java.

To send a Telegram message containing a voice note file in Java, do this:

  1. First, learn how to send a simple text message to a group on the official site.
  2. With the above knowledge, you can now download our sample code.
  3. Locate the file Java/TelegramGroupOpusSender.java.
  4. Study the Java source code and customize the TODO/FIXME lines.
  5. Change to the directory containing the script: cd Java
  6. Follow the instructions at the top of the source code to compile and run the Java program.

Happy coding :)