RE: Need help with RNX0301 error -- CLASSPATH or signature error -- JAVA400-L

Hi Colin;

The Item class is in the jar. The package name is rpgExample.

I viewed the structure of the jar by copying it to a zip file and opening the zip file.

rpzExampleJar.jar
META-INFO
MANIFIST.MF
rpgExample
GetItem.class
GetItem.jar
Item.class
Item.jar
folders for other projects in the Eclipse workspace.

-----Original Message-----
From: JAVA400-L <java400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Colin Williams
Sent: Sunday, October 6, 2024 1:41 PM
To: Java Programming on and around the IBM i <java400-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: Need help with RNX0301 error -- CLASSPATH or signature error

So your code is looking for fully qualified rpgExample.Item.

Is this inside your classes folder in your jar?

On Sun, 6 Oct 2024, 17:25 Blalock, Bill via JAVA400-L, < java400-l@xxxxxxxxxxxxxxxxxx> wrote:

I am trying to call Jave from RPGLESRC. I keep running into RNX0301
when executing the RPGLE program. I have been at it 3 days and sure
could use some guidance.

Message . . . . : Java exception received when calling Java method.
Cause . . . . . : RPG procedure PRCPWDIRG in program BLALOCK/PRCPWDIRG
received Java exception
"java.lang.NoClassDefFoundError:rpgExample.Item" when calling
method "<init>" with signature "()V" in class "Item".

I tried for two days to get past this error with my own class and RPG.
Yesterday I decided to see if I could make RPGLE and Java work
together with an example from the Internet.
https://www/.
mysamplecode.com%2F2011%2F06%2Fcall-java-from-rpgle-explanation-with.h
tml&data=05%7C02%7Cbill.blalock%40fisglobal.com%7C9be6398fec314522b0db
08dce636840b%7Ce3ff91d834c84b15a0b418910a6ac575%7C0%7C0%7C638638369036
954146%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJ
BTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=dyiB4WIeuZshXfYBsbjClQN
sW1i%2Fjjdw5WvKwNDMQ8s%3D&reserved=0
This is a well thought out example.

I wanted to eliminate coding errors in my RPGLE and Java, to minimize
the possibility that this is a signature error. Still getting the same error.

I created an Eclipse project, rpgExample. I copied the Java source
from the example into two files, Item.java and GetItem.java. In
Eclipse I exported them to the IFS as a jar file, named
rpgExample.jar. The destination was /iasp1/java/prcExample. So now I
have the jar in /iasp1/java/prcExample/rpgExample.jar.

I create the RPGLE program as BLALOCK/QRPGLESRC (PRCPWDIRG). I
changed the package name from "com.as400samplecode" to match my
package name of "rpgExample" in both Java and RPGLE.

I used this statement at the top of the RPGLE program:
cmdString = 'ADDENVVAR ENVVAR(CLASSPATH) ' +
'VALUE(''/iasp1/java/prcExample/rpgExample.jar'')' +
'REPLACE(*YES)';
runCmd(cmdString);

I checked the value of CLASSPATH after executing the program with
WRKENVVAR. The value was
CLASSPATH
'/java/prcExample/rpgExample.jar'
That is what I expected. I checked the CLASSPATH with WRKLNK. It was
found.

The execution fails with the RNX0301 error.

I cannot understand what is going on. I'd appreciate some advice. I
can send the source code to you.

Thanks

Bill Blalock
Complete Payment Recovery Services
C (205) 292-0725
E Bill.Blalock@xxxxxxxxxxxxx<mailto:Bill.Blalock@xxxxxxxxxxxxx>

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