Désolé, the program does not run with OpenJDK as provided by Ubuntu 12.10. But now it runs with an updated OpenJDK 1.7. Call the jar-file directly with java -jar xiss-web.jar Having had no success on the Oracle download page as accepting cookies, license-agreements and what not... is not enough to finally get a «Sun» SDK, I just tried to update OpenJDK. Et voilà. Excuse mon premier commentaire. Ça marche.