You can replace the author tag by whatever value you need and it will have an effect on new generated classes.
${user} uses the value of the user.name environment variable. You can check it via System.getProperty("user.name").
There are several solutions:
- define it via command line:
C:/eclipse/eclipse.exe -vmargs -Duser.name="someUserName"
- define it via eclipse.ini:
-showsplash org.eclipse.platform --launcher.XXMaxPermSize 256M -vmargs -Dosgi.requiredJavaVersion=1.5 -Duser.name="someUserName" -Xms40m -Xmx512m