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March 2001, Week 1

HP3000-L@RAVEN.UTC.EDU

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Subject:
From:
Lars Appel <[log in to unmask]>
Reply To:
Lars Appel <[log in to unmask]>
Date:
Sat, 3 Mar 2001 22:14:04 +0100
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>Actually, that was how the 'system' was going to operate in the beginning, a
>JAVA prog was to call a COBOL prog.  However, we are not JAVA folks, recall
>that we have a product that converts COBOL to JAVA (it needs some tweaking).

Ah. Some tool that converts COBOL to JAVA. I missed that part in the
original posting. I'm still not sure about the "was to call a COBOL
subprogram" part. When calling native code subroutines from JAVA, you
still might want to make sure that the subroutines don't have problems
living in the multithreaded context that JAVA establishes. I seem to
recall that certain types of COBOL subprograms (or prodecures in Pascal
speak) retain values of their local variables across invocations. This
could cause ugly effects if two or more JAVA threads try to use them.

Lars.


PS: When mentioning my "using Java as gateway to native MPE programs"
experiments in my previous posting, I also forgot the URL to examples:
http://www.editcorp.com/Personal/Lars_Appel/JavaDemo -> Telnet/Proglets
(note that this is all somewhat experimental code, but worked for me)

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