The easiest way to run Jomic on platforms other than Mac OS X is to use Webstart, a standard way to launch applications by simply clicking a link on a home page.

Requirements

Installation

Open http://jomic.sourceforge.net/webstart/ in your web browser and click on "Start Jomic!". A window should pop up and inform about the download progress. This will take a while. When done, Jomic automatically launches.

Start

To start Jomic, you can reuse the link mentioned above. However, this is a bit tedious because you have to start the web browser, select a bookmark and click the link.

Most Web Start setups come with an application launcher that makes it easy to start any of the installed Web Start applications.

Figure 1.1. Web Start application launcher.

The Web Start application launcher allows to run Jomic without going to the web site.

Pressing "Launch Online" will check for possible updates and download them. If there are no updates the applications launches a lot faster then during the installation. Pressing "Launch Offline" will launch the application immediately. This even works without any network connection.

If you prefer the command line and are using Sun's Web Start implementation, the following should do the trick: 

javaws http://jomic.sourceforge.net/webstart/jomic.jnlp
Without any network connection, use the "-offline" switch: 
javaws -offline http://jomic.sourceforge.net/webstart/jomic.jnlp
Unfortunately Web Start does not allow to specify any application specific command line options, so you cannot pass a comic file name here.