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  1.  Home
  2. JAVA400-L
  3. August 2013

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 in
the directory
they are supposed to be in.



Can installing a new version of java cause a change in a
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



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(JAVA400-L) mailing list To post a message email:
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