What Is The Accepted Content-type for JAR Files?

I can't believe it.
mycgiserver.com, a JAVA server (free) service is serving the JAR (Java Archive) files with Content-Type: text/plain !!!
This is what the program that I wrote returns for a JAR file in said server:

Is anyone here a Java server admin that can tell me what is the convention to use (before I go to Sun's site and look for a JAR file!) I will then report the bug to mycgiserver.com.
Needles to say, some browsers will try to display the JAR file as text on the screen, producing garbage as expected. I want the File/Save dialog box to appear instead, as it does with ZIP files, which is how I have been getting around the problem. I am just tired of having to rename *.JAR to *.ZIP as workarounds.
I expect that ignorance from say, GeoCities.com but not from a JAVA service!
Thanks!

PS: The Content-Type: for a ZIP file from that server is application/zip.
[ May 18, 2002: Message edited by: Tony Alicea ]

There is nothing to do with mycgiserver.com.
It's your own program which could not tell what the MIME type of .jar bolongs to.

I think that Ming Chen is probably right about it not being a problem with the server unless your program is actually getting the Content-Type header.
The place to look for Mime-Types is: ftp://ftp.isi.edu/in-notes/iana/assignments/media-types/media-types
Looking there, I don't see an entry for jar files, so I would use the same one as for zip.

application/octet-stream or application/java-archive or something similar would have been more appropriate
And i agree with Tony . Mycgiserver guys are expected to map content-type for jar-files in their web-server's conf ( do they use apache? )
[ At least the default for jar should have been a binary type instead of text/plain ]
And i do NOT think that Tony's program is the actual culprit , as Ming or David opined.