Re: Calling Java From RPGLE

I solved the JDK issue. Just needed to make some more changes in Eclipse.

Now I have a prototype issue. Will work on that and may have some more questions later.

Thanks,

Joe

From: Joe Wells
Sent: Saturday, September 15, 2012 12:37 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: Calling Java From RPGLE

First, let me say that I am not sure if this is the appropriate forum so please let me know if I should post elsewhere (the JAVA forum did not seem to have much activity).

Second, I have never tried to do this task before so I am quite the novice!

Here is the scenario -

- java program written and jar created using Eclipse.

- Java methods prototyped in an RPG program.

- Classpath set and RPG called.

- Error received is '... received Java exception "java.lang.UnsupportedClassVersionError: (edu/uabmc/convert/pdf/IMGTIFF2PDF) bad major version at off"...'

I Googled and it appears that the JDK of the JAR file is incompatible that that of the 400. The 400 JDK is 1.5.0.

I changed eclipse.ini to include
-vm
C:\Program Files\Java\jre1.5.0_12\bin\javaw.exe

I then recreated the jar file, but received the same error.

How can I confirm the JDK level of the jar?

I used jarmaker to extract the jar file contents to the IFS and thought I might could recreate the jar on the 400 using the native JDK......but have not found how to do this.

Any and all thoughts, comments and suggestions are welcomed.

Thanks,

Joe