I’m not sure if there’s a way in Eclipse itself. But from what I can find, ${user}
uses the value of the user.name
environment variable; therefore, you can pass -Duser.name=My Name
in eclipse.ini to override it.
Or, if you prefer, you can modify the shortcut to point to:
C:/java/eclipse/eclipse.exe -vmargs -Duser.name="cleverUserNameToUseInSourceCode"
as shown in this blog entry.