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Hi Mark,
Standard Java batch runs redirect stdout and stderr to spooled files.
If you're just trying to check a one time problem, you should see the info
there.
Joe Sam
Joe Sam Shirah - http://www.conceptgo.com
conceptGO - Consulting/Development/Outsourcing
Java Filter Forum: http://www.ibm.com/developerworks/java/
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----- Original Message -----
From: <MWalter@xxxxxxxxxxxxxxx>
To: "Java Programming on and around the iSeries / AS400"
<java400-l@xxxxxxxxxxxx>
Sent: Wednesday, June 08, 2005 4:48 PM
Subject: Re: Trying to get output from System.out.
> Sam,
>
> Thanks for the informative response.
>
> I understand that calling Java from RPG can be a performance headache, but
> in our shop, with 1 RPG programmer, and a requirement for allot of
> spreadsheets at certain times during the month, this is really our only
> option considering there are no Java programmers here. I dabble in it, but
> that's about it.
>
> The class I wrote, is to replace a sub-procedure, written in RPG, to open
> an existing Excel Workbook. The subprocedure, on my system, did not work.
I
> couldn't get any information out of the system as to why the Exception was
> occurring. So, I decided to write basically the same code in Java, in
order
> to see why the code was failing. This prompted my query for information as
> to how to see what comes out of System.out. In all the testing, though,
the
> class works. It does return the workbook. I modified it a bit to write out
> a small error log if there is an error. This works as well. This program
> will be run once a month. I've tested it and it works fine. Although, like
> you said, there are performance issues.
>
> I look forward to learning more about Java programming. But, I need to
> serve my employer first.
>
> Thanks again for the help,
>
> Regards,
>
> Mark
>
> Mark D. Walter
> Senior Programmer/Analyst
> CCX, Inc.
> mwalter@xxxxxxxxxx
> http://www.ccxinc.com
>
>
>
> "Joe Sam Shirah"
> <jshirah@attgloba
> l.net> To
> Sent by: "Java Programming on and around the
> java400-l-bounces iSeries / AS400"
> @midrange.com <java400-l@xxxxxxxxxxxx>
> cc
>
> 06/08/2005 04:33 Subject
> PM Re: Trying to get output from
> System.out.
>
> Please respond to
> Java Programming
> on and around the
> iSeries / AS400
> <java400-l@midran
> ge.com>
>
>
>
>
>
>
> ----------
> I contacted Mark off-list because it wasn't clear to me if Colin's
> response resolved things and I didn't want to clutter the list with just
an
> inquiry. Mark's response is below and I will refer to it later on.
> ----------
>
>
> I will just briefly state my opinion that the biggest problem is
> calling
> Java apps from RPG. It seems cool, but there are lots of issues, and
> performance/memory becomes a real headache with multiple users. We never
> have these problems because we just don't do it. JNI has its place, but
> normally asynchronous processing is the answer. We use messaging due to
> several benefits; others do the same with data queues.
>
> BTW, my conclusions are educated guesses. We don't do things this
way,
> so it has zero educational value for me, and as a business owner I don't
> get
> to eat unless I bill, so there's no incentive to go through testing. With
> that said,
>
> First, standard IFS files are in ASCII. I think your initial problem
> is
> that EBCDIC is getting loaded into the file. From what I can tell about
> QIBM_USE_DESCRIPTOR_STDIO, while most of the documentation deals with PASE
> and C code, I think the RPG programs job log and/or messages are getting
> put
> to the IFS file as stdout and stderr. I may be wrong, but it fits your
> description. So, the first thing I would try is ditching that environment
> variable. See
>
> File systems
>
> <
>
http://publib.boulder.ibm.com/iseries/v5r2/ic2924/index.htm?info/rzalf/rzalffilesystems.htm
>
> >
>
> for *some* information.
>
> Next, I wouldn't use SystemDefault.properties. That could get to be a
> maintenance headache one way or another. In addition, I suspect that it
> would cause previous data to be overwritten, although I'm not 100% certain
> of that - depends on how the default out/err is opened.
>
> Colin's code ( which includes buffering ) should work fine. The
> general
> basic form is:
>
> // set out, err
> System.setErr(
> new PrintStream(
> new FileOutputStream(
> "/myDir/myLog.log", true ) ) );
>
> System.setOut(
> new PrintStream(
> new FileOutputStream(
> "/myDir/myLog.log", true ) ) );
>
> Two things about your code below: You never set System.out or
> System.err, and, opening and closing files is expensive. For this
purpose,
> you should only do it once per program. Otherwise, there's nothing that
> strikes me as obviously wrong, although you don't need
>
> fs.close();
>
> after
>
> ps.close();
>
> Maybe there's no text associated with getMessage() for the error? Try
> writing another string as well. HTH,
>
>
> Joe Sam
>
> Joe Sam Shirah - http://www.conceptgo.com
> conceptGO - Consulting/Development/Outsourcing
> Java Filter Forum: http://www.ibm.com/developerworks/java/
> Just the JDBC FAQs: http://www.jguru.com/faq/JDBC
> Going International? http://www.jguru.com/faq/I18N
> Que Java400? http://www.jguru.com/faq/Java400
>
>
> ----- Original Message -----
> From: <MWalter@xxxxxxxxxxxxxxx>
> To: "Joe Sam Shirah" <jshirah@xxxxxxxxxxxxx>
> Sent: Wednesday, June 08, 2005 2:15 PM
> Subject: Re: Trying to get output from System.out.
>
>
> > It makes sense, but I can't get it to work. Here's what I've done
playing
> > with this:
> >
> > public class WorkbookObject {
> >
> > public HSSFWorkbook getWorkbookHandle (String pathToFile)
> > {
> >
> > try {
> > FileInputStream fs = new FileInputStream(pathToFile);
> > POIFSFileSystem pfs = new POIFSFileSystem(fs);
> > HSSFWorkbook wb = new HSSFWorkbook(pfs);
> > fs.close();
> > String tempString = "This Worked";
> > writeErrorLog(tempString);
> > return wb;
> >
> > }
> > catch (Exception e){
> > writeErrorLog(e.getMessage());
> > return null;
> > }
> > }
> >
> > private void writeErrorLog (String error)
> > {
> > try {
> > String errorFileString =
"/javalog/myErrors.log";
> > FileOutputStream fs = new
> > FileOutputStream(errorFileString,true);
> > PrintStream ps = new PrintStream(fs);
> > ps.println(error);
> > ps.close();
> > fs.close();
> > }
> > catch (Exception ioe){
> >
> > }
> > }
> > }
> >
> >
> > I get nothing in myErrors.log
> >
> > Obviously I'm a Java Rookie. Again this is being called from RPG.
> >
> > Thanks,
> >
> > Mark
> >
> > Mark D. Walter
> > Senior Programmer/Analyst
> > CCX, Inc.
> > mwalter@xxxxxxxxxx
> > http://www.ccxinc.com
> >
>
> --
> This is the Java Programming on and around the iSeries / AS400 (JAVA400-L)
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>
>
>
> --
> This is the Java Programming on and around the iSeries / AS400 (JAVA400-L)
mailing list
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> To subscribe, unsubscribe, or change list options,
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> Before posting, please take a moment to review the archives
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>
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