Java Mapping Issue

Question

Hi,
I'm new to JAVA mapping and I'm having an issue which I can't get resolved :
When I execute my mapping I get :
<SAP:Error xmlns:SAP="http://sap.com/xi/XI/Message/30" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="">
  <SAP:Category>Application</SAP:Category>
  <SAP:Code area="MAPPING">LINKAGE_ERROR</SAP:Code>
  <SAP:P1>XIFileNameMapClass</SAP:P1>
  <SAP:P2>http://notimportant.com/xi/SOOFT</SAP:P2>
  <SAP:P3>068fe9b0-44d1-11db-c69d-ee989e43162e</SAP:P3>
  <SAP:P4>-1</SAP:P4>
  <SAP:AdditionalText />
  <SAP:ApplicationFaultMessage namespace="" />
  <SAP:Stack>Incompatible class versions (linkage error)</SAP:Stack>
  <SAP:Retry>M</SAP:Retry>
  </SAP:Error>
I'm using eclipse for the java class and I have choosen several jre versions to create the .jar file but all lead to the same error.
I had copied the required aii_map_api.jar.jar from xi box to my local project directory and added it as an external .jar to my project.
But since I new to JAVA and unsure on what exactly is going into the jar and what not.
Is it important with which jre version you build the java class ? ( Xi is running on 1.4.2_12 ) I tried first with 1.5.0_06 and then with 1.4.2_9 and then 1.4.2_13 all with the same result.
I do this by adding a different jre to the properties of my project. And then I export to the .jar file . Is that enough ? ( I was expecting something like a 'build' option somewhere but I can't find that in eclipse )
When I imported the archive in XI, I also see a .Classpath , a .project , SAP_AG_G.RSA and a SAP_AG__G.SF file.
This reminds me of those ugly .dll incompatibilities which I had hoped not occurring with JAVA...:(
Any ideas ?
PS We are on XI 7.0 SP8 ( so the older note 755302 is not relevant )

Answer 1

Hi all,
I did understand that I had something todo with different versions ( as I started to make a first attempt with version jre 1.5 and then with other versions )
But somehow I apparently couldn't get my .jar file to be compiled to a 1.4.2_xx
( although I tried numerous settings in the Eclipse build path etc...)
Finally, I removed the 1.5 version and started from scratch using jre 1.4.2_10.
And now it works OK !
I'm sure you can configure Eclipse correctly to generate 1.4 compatible jar files ( even when running itself on 1.5 or above ) but I must have missed the right combination of settings ( as I said I'm new in Java / Eclipse....)
regards
Dirk