How to uninstall the EclipseUML jar file ?
Below your %ECLIPSE_HOME% directory you should see an Uninstaller directory. We assume that you have successfully installed EclipseUML below your %ECLIPSE_HOME% installation. In this howto we assume that you have successfully installed java. There are two ways to uninstall EclipseUML. If the jar.exe is associated with the .jar extension inside your operating system, a double click on our jar file is enough to launch the uninstallation procedure. If not, open a shell under your operating system, go into the %ECLIPSE_HOME%/Uninstaller directory then type the following : java -jar eclipseuml-uninstaller.jar Re-start Eclipse and verify that everything is uninstalled. To do so, go to Help->About Eclipse Platform->Plug-in Details. Check EMF, GEF and EclipseUML entries.