Invalid class file format... major.minor version '49.0' is too recent ...

I am using the Eclipse 3.1 and Oracel BPEL designer 0.9.13
After I created a new BPEL process (named: trybpel), I got the following output in the console:
uildfile: D:\eclipse\workspace\trybpel\build.xml
main:
[bpelc] 正在验证 "D:\eclipse\workspace\trybpel\trybpel.bpel" ...
[bpelc] error: Invalid class file format in D:\Java\jre1.5.0\lib\rt.jar(java/lang/Object.class). The major.minor version '49.0' is too recent for this tool to understand.
[bpelc] error: Class java.lang.Object not found in class com.collaxa.cube.engine.core.BaseCubeProcess.
[bpelc] 2 errors
BUILD FAILED: D:\eclipse\workspace\trybpel\build.xml:28: ORABPEL-01005
Total time: 8 seconds
I am puzzled with the information in bold. Would anyone tell me how to fix this problem? Thank you very much.

the same error ORABPEL-01005, but not the same error message,
Errors occurred when compile the bpel process using bpel designer for Eclipse:
(com.oracle.bpel.designer_0.9.13)
using PM: bpel_jboss_101200
More error infomation following:
Buildfile: E:\OraBpelDEclipse3.2\workspace\AboutTest\build.xml
main:
[bpelc] E:\OraBpelDEclipse3.2\workspace\AboutTest\temp\bpelc762.tmp\BPEL-INF\src\bpel\p0\BPEL_BIN.java:835: Invalid expression statement.
[bpelc] retun true;
[bpelc] ^
[bpelc] E:\OraBpelDEclipse3.2\workspace\AboutTest\temp\bpelc762.tmp\BPEL-INF\src\bpel\p0\BPEL_BIN.java:835: ';' expected.
[bpelc] retun true;
[bpelc] ^
[bpelc] E:\OraBpelDEclipse3.2\workspace\AboutTest\temp\bpelc762.tmp\BPEL-INF\src\bpel\p0\BPEL_BIN.java:208: Method setPartneLinkBinding(com.collaxa.cube.rm.suitcase.PartnerLinkBindingDescriptor) not found in class com.collaxa.cube.engine.types.bpel.CXPartnerLink.
[bpelc] __pl.setPartneLinkBinding(getProcessDescriptor().getPartnerLinkBindings().getPartnerLinkBinding(__pl.getName()));
[bpelc] ^
[bpelc] E:\OraBpelDEclipse3.2\workspace\AboutTest\temp\bpelc762.tmp\BPEL-INF\src\bpel\p0\BPEL_BIN.java:584: Undefined variable: __ctx
[bpelc] __setOutgoingLinks(__sc, __ctx);
[bpelc] ^
[bpelc] 4 errors
BUILD FAILED
E:\OraBpelDEclipse3.2\workspace\AboutTest\build.xml:28: ORABPEL-01005
Error in java files auto-generated when compiling ,why?
Thanks!

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Solved
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Message was edited by:
sunildm4u

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Neha Mahanty

Hi Bill,
Yes after the correct JDK the connection test was successful. I will now deploy the application in the server. I need to go through the deployment steps to proceed further.
The connection test looks like -
INI file: D:\SAP\MobilePlatform3\Server\configuration\com.sap.mobile.platform.se rver.agentry.application\JavaBE.ini
Encoding: ASCII
reading user credentials from [SERVICE_LOGON] section
connecting as...
clientNum=100
sysNum=01
host=<My Host Name>
name=sycloadm
openCustomConnection::begin
*** Caught exception: null
release::releasing connection
closeConnection::begin
release::complete.
Press any key to continue . . .
Thanks
Neha

Error (Unsupported major.minor version 49.0) in Servlet - Tomcat 5.0.19

Hello,
I am completely new to developing java web applications and I dealing with some very strange behavior. I am simply trying to run tomcat through a tomcat plugin for debugging purposes. When I start tomcat via the command line my application runs fine. When I start tomcat via the eclipse plugin, the server starts without any errors, however when I try to access certain pages via web browser I receive the error
javax.servlet.ServletException: com/sun/tools/javac/Main (Unsupported major.minor version 49.0)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:256)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
     org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:274)
     org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(TilesRequestProcessor.java:254)
     org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:309)
     org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279)
     org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
root cause
java.lang.UnsupportedClassVersionError: com/sun/tools/javac/Main (Unsupported major.minor version 49.0)
     java.lang.ClassLoader.defineClass0(Native Method)
     java.lang.ClassLoader.defineClass(Unknown Source)
     java.security.SecureClassLoader.defineClass(Unknown Source)
     java.net.URLClassLoader.defineClass(Unknown Source)
     java.net.URLClassLoader.access$100(Unknown Source)
     java.net.URLClassLoader$1.run(Unknown Source)
     java.security.AccessController.doPrivileged(Native Method)
     java.net.URLClassLoader.findClass(Unknown Source)
     org.apache.catalina.loader.StandardClassLoader.findClass(StandardClassLoader.java:520)
     org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:857)
     org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:756)
     java.lang.ClassLoader.loadClassInternal(Unknown Source)
     java.lang.Class.forName0(Native Method)
     java.lang.Class.forName(Unknown Source)
     org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory.doesModernCompilerExist(CompilerAdapterFactory.java:174)
     org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory.getCompiler(CompilerAdapterFactory.java:132)
     org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:969)
     org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:799)
     org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:390)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:458)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
     org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:553)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:291)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
     org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:274)
     org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(TilesRequestProcessor.java:254)
     org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:309)
     org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279)
     org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
I realize this is occurring due to java version issues however I cannot understand why simply running tomcat via the eclipse plugin causes this since the jvm settings all appear to be correct

I'm seeing exactly the same thing with Tomcat 4.1 ---also new to Java, no idea how to go about fixing this.
However, since you posted this in August and nobody has responded, it's not clear that this forum is going to be much use.
Sigh

Recent changes to the class file format?

I have the JVM Spec, 2nd ed., on my desk. I'm trying to find out about changes to the class file format since its publication, i.e. what are the differences between class file versions 46.0, 47.0 and 48.0?
So far, searching the JDC and the web hasn't helped. Does a document describing the changes exist?

I have not found a list of changes, but the 2nd edition is at
http://java.sun.com/docs/books/vmspec/2nd-edition/html/ClassFile.doc.html
Clarifications and Amendments to The Java Language Specification at http://java.sun.com/docs/books/jls/clarify.html has a section
"Compilation of Symbolic References"
that is useful.
http://forum.java.sun.com/thread.jsp?forum=31&thread=27569
says:
javac v1.4 emits by default Java 1.2 compatible .class files while
all javac implementations since between 1.1.0 and 1.3.1 emit byte
default Java 1.1 .class files.
Check to see what effect using the -target option in javac to get
the two versions to produce Java 1.1, 1.2, or 1.3 .class files.
discusses using javac -target to generate
-Christopher

Different JDK problems: Unsupported major minor version

We have a very large application, with a client that runs on a PDA and a client (and server) that will run on a normal desktop computer...
These clients use partially the same code, and partially specific code.
For the PDA-client we're bound to Creme (it's something like jdk 1.3) and for the Desktop-client we want to go to JDK 6.
Now I'm getting the error Unsupported major minor version 50 insteadof 47...
What would be the best solution to this problem?
- Should I try to split all common files (increasing the amount of code and the maintenance to the code)
- Or should I keep the commonfiles compiled with JDK 1.4.2 (adding another necessary JDK, a lot of checkstyle complaints, and not the ability to use the new Java-functionality like generics etc...
- Or is there a better way?
Any help would be grately appreciated :)

by reading the documentation.
You have your system set up wrong. This is common with people who don't read the documentation.
If after reading the documentation you still can't get it to work, try the search option.
The answer to your question has been supplied dozens, nay hundreds, of times already and is easy to find.
If you still can't get it, find something else to do, like labelling mail for advertising campaigns.

UnsupportedClassVersionError Unsupported major minor version 50.

I installed Java 1.6 in C:\Program Files\Java\jdk1.6.0. I am able to compile a java files from the command prompt but when I try to run a java file I get the following error "UnsupportedClassVersionError Unsupported major minor version 50."
I am able compile and run the same file when I use TextPad.
I ran the command java -version and it tells me java version "1.3.1_01"
Java<TM> 2 Runtime Environment, Standard Edition (build 1.3.1_01)
Java HotSpot<TM> Client VM (build 1.3.1_01, mixed mode).
I have set the class_path to C:\Program Files\Java\jdk1.6.0\bin.
How can I resolve this issue and shouldn't the java version be 1.6.0?
Thanks.
Sami

Hi Friends,
Is there any to solve my problem. Till now i'm enable to resolve my problem.... MY PROBLEM IS : In my system, the same error as above
Pls send solutions to it..
Thanks
Charan

Invalid class file format... major.minor version '49.0' is too recent ...

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