Java Mapping: Bad version number in .class file

[former_member204873]

hi Experts,

I am getting following error while using JAVA Mapping in PI 7.1.

LinkageError at JavaMapping.load(): Could not load class: convertXML

java.lang.UnsupportedClassVersionError: Bad version number in .class file at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:654) at java.lang.ClassLoader.defineClass(ClassLoader.java:499) at com.sap.aii.ib.server.mapping.execution.MappingLoader.findClass(MappingLoader.java:184) at java.lang.ClassLoader.loadClass(ClassLoader.java:340) at java.lang.ClassLoader.loadClass(ClassLoader.java:285) at com.sap.aii.ib.server.mapping.execution.JavaMapping.load(JavaMapping.java:143) at com.sap.aii.ib.server.mapping.execution.JavaMapping.executeStep(JavaMapping.java:67)

I had created Java Class(JAR file) using NWDS 7.1 SP08.

Please help if possible!

Thanks,

Mayank

[stefan_grube · Accepted solution]

Make sure, that your NWDS is assigned to JDK 1.5

JDK 1.6 is not supported by PI 7.1

[former_member204873 · Accepted solution]

hi Stefan,

I changed Java Version to 5.0, now i am getting following error:

LinkageError when loading class convertXML; details: java.lang.NoClassDefFoundError.

LinkageError at JavaMapping.load(): Could not load class: convertXML

java.lang.NoClassDefFoundError: convertXML (wrong name: Mapping/convertXML) at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:654) at java.lang.ClassLoader.defineClass(ClassLoader.java:499) at com.sap.aii.ib.server.mapping.execution.MappingLoader.findClass(MappingLoader.java:184)

I had created my class convertXML in a package named as Mapping.

Thanks,

Mayank

[Former Member · Accepted solution]

Hi,

If you are using a package. You should place the class file in folder with name of package.

If your package is com.sap.mapping

You should use folder structure like COM/SAP/mapping.

In your case u create folder with name Mapping, place class file inside that and convert the folder to jar file.

Thanks

inder

[Former Member]

Hi Gupta,

After you changed your java version , please make sure that you have recompiled the java code using JDK1.5 compiler and reimported your jar file into IR again.

-thanks

sowmya

[santhosh_kumarv]

Hi,

it happens because of the java program compiled in an not compatiable JDK/JRE version.

~SaNv...