Re: Need help with RNX0301 error -- CLASSPATH or signature error

[Colin Williams <colinwilliams007@xxxxxxxxx>]

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/2011/06/call-java-from-rpgle-explanation-with.html
> 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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