Wrong class version

Hi,
I am trying to copmile and run AppFuse https://appfuse.dev.java.net/ in Eclipse, but am getting a wrong class version error:
F:\...\Constants.java:20: cannot access java.lang.Object
[javac] bad class file: C:\jre1.5.0_02\lib\rt.jar(java/lang/Object.class)
[javac] class file has wrong version 49.0, should be 48.0
[javac] Please remove or make sure it appears in the correct subdirectory of the classpath.
no I understand that this is due to conflicting JDKs and JREs (JVMs?), so what do I need to change? I've been going round in circles and think there might be somwthing I've missed.
Any help/suggestions very welcome, any questions answered if I can.

apologies, seen another thread on this at http://forum.java.sun.com/thread.jspa?threadID=517933&tstart=0

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<Trace level="1" type="T">Interface Mapping http://Migdal.co.il/CRM/SAP-CRM/ProposalDeatailsService ProposalDeatailsService_WS2RFC_IM</Trace>
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<Trace level="1" type="T">java.lang.UnsupportedClassVersionError: xmlpayload (Unsupported major.minor version 49.0) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:539) at java.lang.ClassLoader.defineClass(ClassLoader.java:448) at com.sap.aii.ibrun.server.mapping.MappingLoader.findClass(MappingLoader.java:158) at java.lang.ClassLoader.loadClass(ClassLoader.java:289) at java.lang.ClassLoader.loadClass(ClassLoader.java:235) at com.sap.aii.ibrun.server.mapping.JavaMapping.load(JavaMapping.java:95) at com.sap.aii.ibrun.server.mapping.JavaMapping.executeStep(JavaMapping.java:45) at com.sap.aii.ibrun.server.mapping.Mapping.execute(Mapping.java:92) at com.sap.aii.ibrun.server.mapping.MappingHandler.run(MappingHandler.java:90) at com.sap.aii.ibrun.sbeans.mapping.MappingRequestHandler.handleMappingRequest(MappingRequestHandler.java:95) at com.sap.aii.ibrun.sbeans.mapping.MappingRequestHandler.handleRequest(MappingRequestHandler.java:68) at com.sap.aii.ibrun.sbeans.mapping.MappingServiceImpl.processFunction(MappingServiceImpl.java:79) at com.sap.aii.ibrun.sbeans.mapping.MappingServiceObjectImpl0_0.processFunction(MappingServiceObjectImpl0_0.java:131) at sun.reflect.GeneratedMethodAccessor296.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at com.sap.engine.services.ejb.session.stateless_sp5.ObjectStubProxyImpl.invoke(ObjectStubProxyImpl.java:187) at $Proxy158.processFunction(Unknown Source) at sun.reflect.GeneratedMethodAccessor428.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at com.sap.engine.services.rfcengine.RFCDefaultRequestHandler.handleRequest(RFCDefaultRequestHandler.java:107) at com.sap.engine.services.rfcengine.RFCJCOServer.handleRequestInternal(RFCJCOServer.java:113) at com.sap.engine.services.rfcengine.RFCJCOServer$ApplicationRunnable.run(RFCJCOServer.java:157) at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37) at java.security.AccessController.doPrivileged(Native Method) at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:102) at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172)</Trace>
<Trace level="1" type="T">Linkage error occurred when loading class xmlpayload (http://Migdal.co.il/CRM/SAP-CRM/ProposalDeatailsService, d7e31f30-53be-11dc-8fbd-ee09c0a8664d, -1)</Trace>
<Trace level="1" type="T">com.sap.aii.ibrun.server.mapping.MappingRuntimeException: Linkage error occurred when loading class xmlpayload (http://Migdal.co.il/CRM/SAP-CRM/ProposalDeatailsService, d7e31f30-53be-11dc-8fbd-ee09c0a8664d, -1) at com.sap.aii.ibrun.server.mapping.JavaMapping.load(JavaMapping.java:115) at com.sap.aii.ibrun.server.mapping.JavaMapping.executeStep(JavaMapping.java:45) at com.sap.aii.ibrun.server.mapping.Mapping.execute(Mapping.java:92) at com.sap.aii.ibrun.server.mapping.MappingHandler.run(MappingHandler.java:90) at com.sap.aii.ibrun.sbeans.mapping.MappingRequestHandler.handleMappingRequest(MappingRequestHandler.java:95) at com.sap.aii.ibrun.sbeans.mapping.MappingRequestHandler.handleRequest(MappingRequestHandler.java:68) at com.sap.aii.ibrun.sbeans.mapping.MappingServiceImpl.processFunction(MappingServiceImpl.java:79) at com.sap.aii.ibrun.sbeans.mapping.MappingServiceObjectImpl0_0.processFunction(MappingServiceObjectImpl0_0.java:131) at sun.reflect.GeneratedMethodAccessor296.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at com.sap.engine.services.ejb.session.stateless_sp5.ObjectStubProxyImpl.invoke(ObjectStubProxyImpl.java:187) at $Proxy158.processFunction(Unknown Source) at sun.reflect.GeneratedMethodAccessor428.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at com.sap.engine.services.rfcengine.RFCDefaultRequestHandler.handleRequest(RFCDefaultRequestHandler.java:107) at com.sap.engine.services.rfcengine.RFCJCOServer.handleRequestInternal(RFCJCOServer.java:113) at com.sap.engine.services.rfcengine.RFCJCOServer$ApplicationRunnable.run(RFCJCOServer.java:157) at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37) at java.security.AccessController.doPrivileged(Native Method) at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:102) at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172) Root Cause: java.lang.UnsupportedClassVersionError: xmlpayload (Unsupported major.minor version 49.0) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:539) at java.lang.ClassLoader.defineClass(ClassLoader.java:448) at com.sap.aii.ibrun.server.mapping.MappingLoader.findClass(MappingLoader.java:158) at java.lang.ClassLoader.loadClass(ClassLoader.java:289) at java.lang.ClassLoader.loadClass(ClassLoader.java:235) at com.sap.aii.ibrun.server.mapping.JavaMapping.load(JavaMapping.java:95) at com.sap.aii.ibrun.server.mapping.JavaMapping.executeStep(JavaMapping.java:45) at com.sap.aii.ibrun.server.mapping.Mapping.execute(Mapping.java:92) at com.sap.aii.ibrun.server.mapping.MappingHandler.run(MappingHandler.java:90) at com.sap.aii.ibrun.sbeans.mapping.MappingRequestHandler.handleMappingRequest(MappingRequestHandler.java:95) at com.sap.aii.ibrun.sbeans.mapping.MappingRequestHandler.handleRequest(MappingRequestHandler.java:68) at com.sap.aii.ibrun.sbeans.mapping.MappingServiceImpl.processFunction(MappingServiceImpl.java:79) at com.sap.aii.ibrun.sbeans.mapping.MappingServiceObjectImpl0_0.processFunction(MappingServiceObjectImpl0_0.java:131) at sun.reflect.GeneratedMethodAccessor296.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at com.sap.engine.services.ejb.session.stateless_sp5.ObjectStubProxyImpl.invoke(ObjectStubProxyImpl.java:187) at $Proxy158.processFunction(Unknown Source) at sun.reflect.GeneratedMethodAccessor428.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at com.sap.engine.services.rfcengine.RFCDefaultRequestHandler.handleRequest(RFCDefaultRequestHandler.java:107) at com.sap.engine.services.rfcengine.RFCJCOServer.handleRequestInternal(RFCJCOServer.java:113) at com.sap.engine.services.rfcengine.RFCJCOServer$ApplicationRunnable.run(RFCJCOServer.java:157) at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37) at java.security.AccessController.doPrivileged(Native Method) at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:102) at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172)</Trace>
<Trace level="1" type="E">CL_XMS_PLSRV_MAPPING~ENTER_PLSRV</Trace>
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<Trace level="1" type="B" name="CL_XMS_MAIN-WRITE_MESSAGE_TO_PERSIST" />
- 
</SAP:Trace>
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<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
- 
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<SAP:Category>Application</SAP:Category>
<SAP:Code area="MAPPING">LINKAGE_ERROR</SAP:Code>
<SAP:P1>xmlpayload</SAP:P1>
<SAP:P2>http://Migdal.co.il/CRM/SAP-CRM/ProposalDeatailsS~</SAP:P2>
<SAP:P3>d7e31f30-53be-11dc-8fbd-ee09c0a8664d</SAP:P3>
<SAP:P4>-1</SAP:P4>
<SAP:AdditionalText />
<SAP:ApplicationFaultMessage namespace="" />
<SAP:Stack>Class versions are incompatible (linkage error)</SAP:Stack>
<SAP:Retry>N</SAP:Retry>
</SAP:Error>
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Runtime Environment
Java version:1.4.2_12
Java vendor:Sun Microsystems Inc.
Version
Service pack:21
Release:30_VAL_REL
Latest change:409678
Sync time:200709211024
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[svn:bz-trunk] 8910: Bug: LCDS-936 - Should have better error message in servlet log if server in services-config .xml is configured to use wrong class.

Revision: 8910
Author:   [email protected]
Date:     2009-07-29 14:22:26 -0700 (Wed, 29 Jul 2009)
Log Message:
Bug: LCDS-936 - Should have better error message in servlet log if server in services-config.xml is configured to use wrong class.
QA: Yes
Doc: No
Checkintests: Pass
Ticket Links:
    http://bugs.adobe.com/jira/browse/LCDS-936
Modified Paths:
    blazeds/trunk/modules/core/src/flex/messaging/MessageBrokerServlet.java

After many hard working days.i finally found the error cause,i needed to make weblogic datasource also ADF doesnt work on internet explorer browser,it works on safary.hope it helps somebody

Class versions are incompatible (linkage error)

Hi All,
I New to SAP XI and i've been working on java mapping, i Used RAD 6.0 for generation of class files, i imported the generated files into Integration builder.
but when i execute the scenario i'm getting this error
"Class versions are incompatible (linkage error)"
in message monitoring with a red flag..
can anyone explain me why i'm getting this error....
Thanks & Regards,
Sai Kumar Madduri

Hi,
Our PI Details:
Runtime Environment
Java version: 1.5.0_14
Java vendor:Sun Microsystems Inc.
Version
Service pack:09
Release: 645_VAL_REL
NWDS IDE: 1.5.0_14
XI
Software component details
XI TOOLS 3.0
Support Package 11 of SAP_XITOOL, 3.0 SP011 011
XI TOOLS 7.0
No Entry for Support Packages.
Request to advise what is the best option for my JAVA Dom program to run
regards
shekar Chandra

SQL query return wrong Windows version

when excuting 'select @@VERSION' returns wrong Windows version. Why?

when excuting 'select @@VERSION' returns wrong Windows version. Why?
SELECT @@VERSION will return SQLServer version and not windows version
Even in case of sql, if you're seeing a different version from what your management studio suggests, then it may be that you're SSMS (client tool) is of another later version whereas the server instance which you're actually connecting to may
be of different (earlier) version.
Please Mark This As Answer if it solved your issue
Please Vote This As Helpful if it helps to solve your issue
Visakh
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VC - Wrong Class Allocation

Hello, a user has allocated the wrong variant class to a configurable material. Meanwhile 2 customer orders have been created using this wrong class allocation. Due to that I am no longer allowed to delete the allocation and change it to the correct one. What can I do? Is there a way to do this on database level and if yes in which tables?
Thank you for your help!
Katrin

Actually I was hoping for a different solution since already production orders exist for the 2 sales orders.
Katrin

LVOOP Class Versioning, saving to file

I'm storing LabVIEW objects to file. What is the best way to re-load these objects even if the class version has changed? Generally I've found that this causes few problems and the classes are able to adapt, except when I've made major changes to the class definition typedef. Is there a way to write an adapter VI that checks the class version of the stored class and up-converts appropriately?
Also, are there any good resources for general "best practices" related to LVOOP, for versioning, working as a team, etc.?

Unfortunately when loading previous classes there doesn't seem to be a way to have tight control over how old versions are converted up. The conversion (hopefully I remember the details right) depends on how they where changed within the editor, if you rename a field then the data for the old name when be placed into the new name, if you remove the field and replace it then the data for the old filed will be deleted and the new one will take the default value).
You'll want to avoid typedefs (classes should be fine) within class data, since typedefs don't maintain their mutation history.
http://lavag.org/topic/14548-class-mutation-history/
Enums can also be a problem
http://forums.ni.com/t5/LabVIEW-Idea-Exchange/Maintain-Mutation-History-as-part-of-Enum-Type-Definit...
Hopefully some version of LabVIEW will allow more control over version mutation, but currently you would need to be very careful with the the class data. SVN (or some other file versioning system), could be helpful for backtracking if you mess up modifying the class data (just don't go before the last in use version, since that may break the mutation system).
To have to full control you would need to flatten your data manually. If you want to go that route converting things to variants then using flatten to string is a simple way of storing type data with the real data.

Need help with "class file contains wrong class"

I have a dbUtil package as
package dbUtil;
public class dbConfig {
public String getHost(String db) {
This file called dbConfig.java has been compiled with -d option and rthe class files resides in dir <install_dir>/webapps/test/WEB-INF/classes/eb/dbUtil/
I have a jsp file in <install_dir>/webapps/test/test.jsp which imports the dbUtil package
<%@ page import="eb.dbUtil.dbConfig" %>
and I am getting this error:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: -1 in the jsp file: null
Generated servlet error:
[javac] Compiling 1 source file
/opt/hpws/tomcat/work/Standalone/localhost/test/test_jsp.java:12: cannot access eb.dbUtil.dbConfig
bad class file: /opt/hpws/tomcat/webapps/test/WEB-INF/classes/eb/dbUtil/dbConfig.class
class file contains wrong class: dbUtil.dbConfig
Please remove or make sure it appears in the correct subdirectory of the classpath.
import eb.dbUtil.dbConfig;
^
1 error
Can anyone tell me what am I doing wrong? I am using tomcat 4.1
Thanks!
L.

Given your java file, the fully qualified name of the class is dbUtil.dbConfig.
What you are importing is eb.dbUtil.dbConfig
These things are not the same.
The root of the classpath for the webapp is the classes directory.
So either
1 - specify dbConfig.java to be in package eb.dbUtil
2 - move the class file into web-inf/classes/dbUtil/dbConfig.class, and import dbUtil.dbConfig.
Also, by convention, classnames should start with a capital letter ie dbUtil.DbConfig.
Cheers,
evnafets

Wrong class version

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