System/Installation

Overview

J systems are available for a number of platforms and can be installed and redistributed for free.

For minimal commitment, run J in your browser as the J Playground. Although not as completely functional as a full J download, it is an excellent option for a newcomer's initial explorations.
If you can browse the Internet you can run J.

You can install full J on your machine as a base system plus addon packages (optional but highly recommended since J programs are so short).

The base system is the minimal system for running J applications. It includes two user interfaces:

• Jconsole, a command-line front-end
• JHS, a browser-based IDE

Most J developers instead use

• the Qt-based IDE, which is one of the addons.

Once you have installed the J base system, use the Package Manager (pacman) right away to install addons, and later on for easy updates.

J9.5 release

Most users should install J9.5.

J9.6 BETA

Adventurous users should install J9.6. Run 9.5 for your production work and 9.6 to play with the latest. By using 9.6 you help the community create the next stable version.

All installs

You are encouraged to use the latest release or beta, but if you need to, install from the following:

System/Installation/J9.5
System/Installation/J9.4
System/Installation/J903
System/Installation/J902
System/Installation/J901
System/Installation/J807

System/ReleaseNotes/J9.6
System/ReleaseNotes/J9.5
System/ReleaseNotes/J9.4
System/ReleaseNotes/J903
System/ReleaseNotes/J902
System/ReleaseNotes/J901
System/ReleaseNotes/J807
System/ReleaseNotes/J806
System/ReleaseNotes/J805
System/ReleaseNotes/J804
System/ReleaseNotes/J803
System/ReleaseNotes/J802

See Archived for earlier versions.