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Thanks, I'll keep that in mind. Thanks, 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 05:26 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> 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/ 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: "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) > mailing list > To post a message email: JAVA400-L@xxxxxxxxxxxx > To subscribe, unsubscribe, or change list options, > visit: http://lists.midrange.com/mailman/listinfo/java400-l > or email: JAVA400-L-request@xxxxxxxxxxxx > Before posting, please take a moment to review the archives > at http://archive.midrange.com/java400-l. > > > > -- > This is the Java Programming on and around the iSeries / AS400 (JAVA400-L) mailing list > To post a message email: JAVA400-L@xxxxxxxxxxxx > To subscribe, unsubscribe, or change list options, > visit: http://lists.midrange.com/mailman/listinfo/java400-l > or email: JAVA400-L-request@xxxxxxxxxxxx > Before posting, please take a moment to review the archives > at http://archive.midrange.com/java400-l. > -- This is the Java Programming on and around the iSeries / AS400 (JAVA400-L) mailing list To post a message email: JAVA400-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/java400-l or email: JAVA400-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/java400-l.
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