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These instructions install a full system (base plus all addons) in the default location, for Windows.


1. Download and run the Windows All-in-One Installer:


A shared installation (C:\Program Files) requires admin privilege to install and upgrade.

An unshared installation (C:\Users\Fred) does not require admin privilege.

Finish Installation

Do the following to create a desktop icon for jconsole:

run Jqt (click green Jqt icon on Start menu)
   load 'pacman'
   'shortcut' jpkg 'jc'
   exit 0

Be sure Jqt is closed so the next step works properly.

Do the following to update your system to the latest:

run Jconsole with new jc901 desktop icon (right click and Run as administrator if shared install)
   'install' jpkg '*'
   exit 0

Update Addons Later

Perform the following steps in the Jqt window to bring the addons up to date.

  • Make sure you are connected to the Internet.
  • Select Tools|Package Manager from the menu.
  • Press the Updates button.
  • Press the Not Installed button.
  • Press the Install button.

(optional) Change Default Folder Names

J needs directories to store temporary files, configuration files and so on. By default these are in a folder under the User's home directory, named like:


To change the folders J uses, follow the instructions here.

(optional) Qt IDE Setup

See Qt IDE/Install for more information on setting up the Qt IDE.