There is the MIDlet-Permissions
and MIDlet-Permissions-Opt
attributes that can be set in the jad file. Can we use them to auto-sign a MIDlet ?
Based on your comments, There is no way to signing your mobile application manually. Its not possible in Java ME development. You have to sign your mobile application from some 3rd party providers. But it will be cost and look on this article for know about MIDlet permissions.