Pretty easy to do
c:\junk>dir Volume in drive C is OSDisk Volume Serial Number is 3C36-1DA9 Directory of c:\junk 12/07/2011 09:58 AM <DIR> . 12/07/2011 09:58 AM <DIR> .. 12/07/2011 09:56 AM <DIR> com 12/07/2011 09:29 AM <DIR> etc 12/07/2011 08:36 AM 295,229 myjar.jar 12/07/2011 09:55 AM <DIR> tmp 1 File(s) 295,229 bytes 5 Dir(s) 186,890,629,120 bytes free c:\junk>jar -uf myjar.jar com\xxx\jbapi\myclass.class c:\junk>dir Volume in drive C is OSDisk Volume Serial Number is 3C36-1DA9 Directory of c:\junk 12/07/2011 10:00 AM <DIR> . 12/07/2011 10:00 AM <DIR> .. 12/07/2011 09:56 AM <DIR> com 12/07/2011 10:00 AM <DIR> etc 12/07/2011 10:00 AM 297,207 jbapi-2.0.jar 12/07/2011 09:55 AM <DIR> tmp 1 File(s) 297,207 bytes 5 Dir(s) 186,890,010,624 bytes free c:\junk>
