Note that the jogl-demos.jar and joal-demos.jar files, which contain the applet's classes, do not need to be signed! JogAmp Community signs jogl, joal and gluegen JAR files, which contain JOGL, JOAL and supporting classes; this is the only Java code which needs to be signed in order to deploy applets using JOGL and JOAL and is the only certificate the end user must accept.