Thank you all,
Maybe this problem is something else. I went for a really simple example, "
http://www.ibm.com/support/pages/example-rpgle-program-calling-helloworld-java-program ". This is the example:
----- Begin example
This example shows how an ILE RPG program would call a Java Program called HelloWorld.
Caution: This is an example only. IBM accepts no responsibility for its correctness.
The java code, HelloWorld.java:
class HelloWorld
{
public static void Hello ()
{
System.out.println("Hello World") ;
}
}
The ILE RPG code to call the Hello method in java class HelloWorld would be:
H DFTACTGRP(*NO)
D sayhello PR EXTPROC(*JAVA
D :'HelloWorld'
D :'Hello')
D Static
C callp sayhello
C eval *INLR = *ON
If the HelloWorld.class object is in IFS directory /home/abc, you must ensure the classpath environment variable is set to this directory. This allows the JVM to find the class object. For example:
ADDENVVAR ENVVAR(CLASSPATH) VALUE('/home/abc') LEVEL(*JOB)
----- end example
I created the class and the RPGLE pgm as in the example. I put the class object in /home/abc/. I opened a fresh interactive session and set the CLASSPATH per the example. Then I entered the command CALL PRCHELLO (the name of the RPGLE program). I am still getting the error message
Additional Message Information
Message ID . . . . . . : RNQ0301 Severity . . . . . . . : 99
Message type . . . . . : Sender copy
Date sent . . . . . . : 10/06/24 Time sent . . . . . . : 17:15:15
Message . . . . : Java exception received when calling Java method (C G D
F).
Cause . . . . . : RPG procedure PRCHELLO in program BLALOCK/PRCHELLO
received Java exception "java.lang.NoClassDefFoundError: HelloWorld" when
calling method "Hello" with signature "()V" in class "HelloWorld". Additional Message Information
Message ID . . . . . . : RNQ0301 Severity . . . . . . . : 99
Message type . . . . . : Sender copy
Date sent . . . . . . : 10/06/24 Time sent . . . . . . : 17:15:15
Message . . . . : Java exception received when calling Java method (C G D
F).
Cause . . . . . : RPG procedure PRCHELLO in program BLALOCK/PRCHELLO
received Java exception "java.lang.NoClassDefFoundError: HelloWorld" when
calling method "Hello" with signature "()V" in class "HelloWorld".
-----End of message.
I am at a loss. I have done exactly what the IBM example did, down to name the IFS folder. Still getting this error. There are no parameters passed so it should not be a signature problem.
What do you think?
-----Original Message-----
From: JAVA400-L <java400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Blalock, Bill via JAVA400-L
Sent: Sunday, October 6, 2024 3:36 PM
To: Java Programming on and around the IBM i <java400-l@xxxxxxxxxxxxxxxxxx>
Cc: Blalock, Bill <Bill.Blalock@xxxxxxxxxxxxx>
Subject: RE: Need help with RNX0301 error -- CLASSPATH or signature error
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>
The information contained in this message is proprietary and/or
confidential. If you are not the intended recipient, please: (i)
delete the message and all copies; (ii) do not disclose, distribute or
use the message in any manner; and (iii) notify the sender
immediately. In addition, please be aware that any message addressed
to our domain is subject to archiving and review by persons other than
the intended recipient. Thank you. Message Encrypted via TLS
connection
--
This is the Java Programming on and around the IBM i (JAVA400-L)
mailing list To post a message email: JAVA400-L@xxxxxxxxxxxxxxxxxx To
subscribe, unsubscribe, or change list options,
visit:
https://list/
s.midrange.com%2Fmailman%2Flistinfo%2Fjava400-l&data=05%7C02%7Cbill.bl
alock%40fisglobal.com%7C9be6398fec314522b0db08dce636840b%7Ce3ff91d834c
84b15a0b418910a6ac575%7C0%7C0%7C638638369036970784%7CUnknown%7CTWFpbGZ
sb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3
D%7C0%7C%7C%7C&sdata=u94byzc2WT9M3H%2Fa%2B9vPaNiIDI6hoGxG3sLCevTBKMw%3
D&reserved=0 or email: JAVA400-L-request@xxxxxxxxxxxxxxxxxx
Before posting, please take a moment to review the archives at
https://archive.midrange.com/java400-l.
--
This is the Java Programming on and around the IBM i (JAVA400-L) mailing list To post a message email: JAVA400-L@xxxxxxxxxxxxxxxxxx To subscribe, unsubscribe, or change list options,
visit:
https://lists.midrange.com/mailman/listinfo/java400-l
or email: JAVA400-L-request@xxxxxxxxxxxxxxxxxx
Before posting, please take a moment to review the archives at
https://archive.midrange.com/java400-l.
The information contained in this message is proprietary and/or confidential. If you are not the intended recipient, please: (i) delete the message and all copies; (ii) do not disclose, distribute or use the message in any manner; and (iii) notify the sender immediately. In addition, please be aware that any message addressed to our domain is subject to archiving and review by persons other than the intended recipient. Thank you.
Message Encrypted via TLS connection
--
This is the Java Programming on and around the IBM i (JAVA400-L) mailing list To post a message email: JAVA400-L@xxxxxxxxxxxxxxxxxx To subscribe, unsubscribe, or change list options,
visit:
https://lists.midrange.com/mailman/listinfo/java400-l
or email: JAVA400-L-request@xxxxxxxxxxxxxxxxxx
Before posting, please take a moment to review the archives at
https://archive.midrange.com/java400-l.
The information contained in this message is proprietary and/or confidential. If you are not the intended recipient, please: (i) delete the message and all copies; (ii) do not disclose, distribute or use the message in any manner; and (iii) notify the sender immediately. In addition, please be aware that any message addressed to our domain is subject to archiving and review by persons other than the intended recipient. Thank you.
Message Encrypted via TLS connection
midrange.com
