Re: Installing new java version -- JAVA400-L

Hi John,

I've seen your thread but haven't followed it closely. I'm about to be out the door, but this may be of some help:

I still cannot get the standard output to go to a physical file using the OVRDBF file, I did OVRDBF STDERR...

If you actually need a physical file, you'd have to create the file, then use property arguments sent with the JAVA/RUNJAVA command. Same for IFS file, but I don't think you'd have to create it first. If you're really just looking to view standard output, err, and so on, use *PRINT for the JAVA/RUNJAVA OUTPUT parameter. It will go to QPRINT, just like a batch job.

Is there a way to find exactly what sequence the classes are loaded in by class loader?

Use *VERBOSE for the JAVA/RUNJAVA OPTION parameter.

http://publib.boulder.ibm.com/iseries/v5r2/ic2924/index.htm?info/cl/runjva.htm

Is there a way to force my classes to be loaded and used rather than any others the class loader may find?

Not easily. You'd have to have your own class loader, and the system one may still get invoked first. As I said, I haven't followed your thread closely, but it appears to be some sort of classpath issue.

HTH,

Joe Sam

Joe Sam Shirah - www.conceptgo.com (904) 302-6870
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-----Original Message----- From: John Allen
Sent: Thursday, August 08, 2013 12:40 PM
To: 'Java Programming on and around the IBM i'
Subject: RE: Installing new java version

Dan, thank again for your advice.
I have been out of the office so I just read your response.

After Googling how to override the Standard output I still
cannot
get the standard output to go to a physical file using the
OVRDBF file,
I did OVRDBF STDERR, is there something else I need to do
besides the OVRDBF?
Does my RUNJVA spawn off a different job losing the
Override?
What is the proper way to direct the STDERR and STDOUT
within a CL program before running RUNJVA

Is there a way to find exactly what sequence the classes are
loaded in by class loader?
Is there a way to force my classes to be loaded and used
rather than any others the class loader may find?

I am sure someone that know java on the IBM i could figure
this out real quick.
I am spending so much time on this I am getting to the point
I will pay someone to log onto my system and fix this if I
could find someone

Thanks again for your help

John

-----Original Message-----
From: Dan Kimmel [mailto:dkimmel@xxxxxxxxxxxxxxx]
Sent: Monday, August 05, 2013 1:07 PM
To: Java Programming on and around the IBM i
Subject: RE: Installing new java version

Unless you do something to redirect standard out, it'll wind
up in a QPRINT file.

org.apache.commons.cli is the command line interface. Just
glancing through the source, the 1.2 version of Option class
uses Java 5 constructs in the static initialization. If
somehow a 1.2 version of commons-cli jar file is hit first
by your classloader, initialization is going to fail. Then
when some other piece of code attempts to parse a command
line, the NoClassDefFoundError will be thrown. Look all over
your machine for a commons-cli-1.2.jar file.

Be aware of java extensions. Besides your classpath and the
jre, classes may also be loaded from jars in the extension
path. Besides the {jre}/ext path, jars may also be loaded
from the /QIBM/UserData/Java400/ext path.

-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx [mailto:java400-l-
bounces@xxxxxxxxxxxx] On Behalf Of John Allen
Sent: Monday, August 05, 2013 11:09 AM
To: 'Java Programming on and around the IBM i'
Subject: RE: Installing new java version

Ok, Thanks so much for that bit of information. For some

crazy reason

I thought the message text displayed was pointing to the

cause of the

error.

Now to go find the "standard out log"

-----Original Message-----
From: Dan Kimmel [mailto:dkimmel@xxxxxxxxxxxxxxx]
Sent: Monday, August 05, 2013 10:31 AM
To: Java Programming on and around the IBM i
Subject: RE: Installing new java version

java.lang.NoClassDefFoundError does not necessarily mean

that the jar

was not found by the classloader. It may also mean that

the class

failed during initialization. That's the more likely issue

as you

haven't changed classpath or methods of loading and you

are still

running in JVM 1.4.2.
Find your standard out log and look for errors during

class

initialization much earlier than your

NoClassDefFoundError.

> -----Original Message-----
> From: java400-l-bounces@xxxxxxxxxxxx [mailto:java400-l-
> bounces@xxxxxxxxxxxx] On Behalf Of John Allen
> Sent: Friday, August 02, 2013 2:51 PM
> To: 'Java Programming on and around the IBM i'
> Subject: RE: Installing new java version
>
> Dan,
>
> Thanks for your reply. Just wanted to add this bit of
info:
> We have other java programs that are still running fine.
>
> Displaying /qibm/userdata/java400
> Opt Object link Type Attribute Text
> ext DIR
>
> AdoptAuthority DIR
>
> Nothing else, no files at all, I can't seem to find
> SystemDefault.properties file anywhere , is it OK to not
have one?
> Can I create a file SystemDefault.properties and add
> java.home=/QIBM/ProdData/Java400/jdk14/
> java.version=1.4
> to it?
>
> I checked /home and it is empty
>
> So I displayed /qibm/Prodata/java400 and I see:
> Object link Type
> ext DIR
> fonts DIR
> jdk13 DIR
> jdk14 DIR
> jdk15 DIR
> jt400ntv.jar STMF
> Hello.class STMF
> Hello.java STMF
> MRI2924 DIR
> NAWTtest.class STMF
> NAWTtest.java STMF
> PropDump.class STMF
> PropDump.java STMF
> QDefineClassCache.jar STMF
> SystemDefaultCacheExample.properties STMF
>
> Does this look OK? Still no SystemDefault.properties

file

anywhere
>
> I put the program in debug and just before it executes

the

RUNJVA
> command I ran RUNJAVA *VERSION And get Version JVM

V5R3M0

JDK 1.4.2.
>
> The error is caused by the following program execution
using
> RUNJVA:
> RUNJVA CLASS('xxapdfen') PARM(&infileflg

&FullPathIn)

> CLASSPATH(&CLASSPATH) CHKPATH(*IGNORE)
>
> Where &classpath=
>

/dapp/java/xxapdfenc.jar:/dapp/java:/dapp/java/xxapdfeni.jar

> :
>
> The jar files are where they have always been.
>
> Any other ideas for me?
>
> I am going to uninstall the PTF that was used to install
java 1.5 this
> weekend and see if that returns us back to working.
>
>
>
>
> -----Original Message-----
> From: Dan Kimmel [mailto:dkimmel@xxxxxxxxxxxxxxx]
> Sent: Thursday, August 01, 2013 4:49 PM
> To: Java Programming on and around the IBM i
> Subject: RE: Installing new java version
>
> Start by checking how that java program is invoked. At
V5R3, the
> java.version system property has the most impact on

which

JVM is
> chosen. That property can be set in the QSH java command
line (in QSH
> java -Djava.version=1.4, eg).
>
> In qsh, I can do this:
> $
> > java -version -Djava.version=1.3.1
> java version "1.3.1"
> $
> > java -version -Djava.version=1.4.2
> java version "1.4.2"
> $
> > java -version -Djava.version=1.4
> java version "1.4.2"
> $
> > java -version -Djava.version=1.1
> Java Development Kit could not be found.
> $
> > java -version -Djava.version=1.2
> java version "1.2.2"
> $
>
> I haven't been able to find a way to set version from

the

RUNJVA
> command, however. I believe the command invocation pulls
its value
> from SystemDefault.properties file.
>
> Browse : /qibm/UserData/Java400/SystemDefault.properties
> Record : 1 of 2 by 18
> Control :
>
>

....+....1....+....2....+....3....+....4....+....5....+..

> ************Beginning of data**************
> java.home=/QIBM/ProdData/Java400/jdk14/
> java.version=1.4
> ************End of Data********************
>
> As above, there's one in the /qibm/UserData/Java400.

There

can also be
> one in the home directory of the user which takes
precedence over the
> one in /QIBM.
>
> There was significant displacement of classes in Java 5.
> Many classes were added to the core distribution that

had

been
> commonly included only by classpath. This was

particularly

true of
> servlet classes. The net effect was that applications

that

had been
> running in 1.4.2 would throw exactly the error you're
seeing as the
> classes in the classpath were duplicated in the runtime.
>
> To see what you're command is doing, try to get as close
as possible
> to the environment where RUNJVA is invoked in your
application and run
>
> RUNJVA *version
>
> If it comes up 1.5, you'll have to find where the

property

is set and
> change it, else figure out what classes are being
duplicated in the
> classpath and remove the jar from the classpath.
>
> > -----Original Message-----
> > From: java400-l-bounces@xxxxxxxxxxxx

[mailto:java400-l-

> > bounces@xxxxxxxxxxxx] On Behalf Of John Allen
> > Sent: Thursday, August 01, 2013 2:43 PM
> > To: JAVA400-L@xxxxxxxxxxxx
> > Subject: Installing new java version
> >
> > I want to start out by saving my java skills are

pretty

> basic.
> >
> > I have a java program that has been running fine for
years
> using java
> > 1.4 on V5R3.
> >
> > Last week we installed java 1.5 (via PTF). I do not

want

> to start
> > using it yet, but I wanted to get it installed for
> potential future
> > use.
> >
> >
> >
> > When I check the java version on our system (QSH java
> > -version) I get 1.4.2
> >
> >
> >
> >
> >
> > 5722JV1 V5R3M0 Developer Kit for Java
> >
> > 5722JV1 V5R3M0 Java Developer Kit 1.3
> >
> > 5722JV1 V5R3M0 Java Developer Kit 1.4
> >
> > 5722JV1 V5R3M7 Java Developer Kit 1.5
> >
> >
> >
> > No other changes I know of have been made. The java
> program has not
> > changed in years and has not been recompiled.
> >
> >
> >
> > But.. When I run the java program I get an error:
> >
> > java.lang.NoClassDefFoundError:
> > org/apache/commons/cli/Option
> >
> > at
java.lang.Throwable.<init>(Throwable.java:195)
> >
> >
> > at
> > java.lang.LinkageError.<init>(LinkageError.java:36)
> >
> >
> > at
> >
>

java.lang.NoClassDefFoundError.<init>(NoClassDefFoundError.j

> > ava:40)
> >
> > at xxapdfec.main(xxapdfec.java:40)
> >
> >
> > Java program completed with exit code 1
> >
> >
> >
> > I used debug to check the class paths.
> >
> > I checked to make sure the .class and jar files were

> the directory
> > they are supposed to be in.
> >
> >
> >
> > Can installing a new version of java cause a change in

> existing
> > programs execution.
> >
> > Does anyone have any starting point for me to look at?
> >
> > How do I read this error logging? What do the numbers
(195
> > 36 40) represent? Program line numbers?
> >
> >
> >
> > Thanks in advance
> >
> >
> >
> > John
> >
> >
> >
> > --
> > This is the Java Programming on and around the IBM i
> (JAVA400-L)
> > mailing list To post a message email:
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posting,

> please take a
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> >
>
>
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