Frequently Asked Questions about JavaComm
What does JavaComm stand for?
JavaComm stands for Java Communication and combines chat, media player, file transfer, telephony, screen sharing, and IPTV in a single program. Its goal is to centralize communication functions in one application and make collaboration on the PC easier.
Under which license is JavaComm released?
JavaComm is released under the Mozilla Public License 2.0 (MPL 2.0). This license is recognized by the Open Source Initiative (OSI) and permits free use under the terms of the license.
What hardware is required for JavaComm?
JavaComm runs on any PC or notebook. No special components are required.
Which operating systems does JavaComm support?
JavaComm is offered as a desktop application for Windows and Linux. There is currently no ready-to-use installation package for macOS.
Is JavaComm a desktop application or a browser application?
JavaComm is a desktop application that runs directly on the PC and does not run in a browser.
Why is there no mobile version for smartphones or tablets?
The desktop version is the primary focus. A simplified chat version for mobile devices is in development.
Where should I install JavaComm?
JavaComm is a portable application. Download the ZIP file and extract it to any folder, for example, your home directory.
How do I extract JavaComm on Windows?
Windows opens ZIP files via the File Explorer. Alternatively, 7-Zip can be used. Right-click the ZIP file → Extract to portable-win64. 7-Zip handles the rest automatically.
How do I start JavaComm on Windows?
Open the folder where you extracted the program and double-click “runme”. The login dialog will appear automatically.
How do I extract JavaComm on Linux?
Use your file manager (e.g., Nautilus) or open a terminal and run the following command:
unzip -d portable-linux portable-linux.zip
How do I start JavaComm on Linux?
Change to the installation folder in the terminal and run the program with:
./runme.sh
What username and password should I enter at first start?
If you don’t have an account yet, click “Login” without entering any information. You will be logged in as a guest and can explore. You can register at any time later.
What should I do if I forgot my password?
Request a new password with your registered email address directly in the program. Retrieving it via the website is currently not possible.
Who is the domain chat4j.de?
chat4j.de is the official test environment for JavaComm. You can try the program and test its functions there without obligation.
Why can’t I delete my account manually?
For security and privacy reasons, inactive accounts are automatically deleted. If you do not log in for 180 days, your account will be removed. Any new login resets the counter.
Is there a size limit for file sharing?
No. JavaComm allows transferring files of any size. The only limits are your internet connection and available storage.
Why do I get a “Connection timed out” message?
“Connection timed out” indicates network issues. The cause can be a router without configured port forwarding. Open ports 29467–29478 (TCP) for incoming and outgoing traffic. If the remote side is not publicly reachable, a direct connection is not possible.
Is there an alternative to file sharing?
Yes. You can transfer files directly in the chat window – fast and simple, without separate sharing.