Error (Unsupported major.minor version 49.0) in Servlet - Tomcat 4.1

Hello,
I have got below error when i have run web application with JSP,Servlet,beans:
I have used Tomacat 4.1, 5.0 and 5.9.No change ???
I am using j2sdk1.4.2_03 and j2re1.4.2_03.
This is the complete project i want to run in my PC
when i extract .war file and run on my PC it's generate below error :
This is urgent For me . PLEASE HELP
ERROR :
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Error allocating a servlet instance
     at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:672)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2422)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:163)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:199)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:700)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:584)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
     at java.lang.Thread.run(Thread.java:536)
root cause
java.lang.UnsupportedClassVersionError: com/innovapark/soar/jsp/index_jsp (Unsupported major.minor version 49.0)
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:509)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
     at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1679)
     at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:968)
     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1409)
     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1289)
     at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:885)
     at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:668)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2422)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:163)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
     at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
     at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:199)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:700)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:584)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
     at java.lang.Thread.run(Thread.java:536)
Apache Tomcat/4.1.30
Thank You
Neon

Solved
Just do these things.... If you initially complied your classes in jdk1.5 and if u r trying to run the same in 1.4.2 or other.. The already compiled classes will be expecting jdk 1.5 JRE for their runtime execution. So what u have to do is......
1.stop ur sever
2.delete the work directory in tomcat
3.Delete the work directory in your projects web-app Folder
4.Now cleann the project... Build... and Run Again ... . It should work...
if still it dont , i prefer use only jdk1.4.2 on system.. set enviorment variebles for it...Reinstall tomcat .. and do above mentioned steps ,,, This should solve the problem...
Message was edited by:
sunildm4u

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[java] at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
[java] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
[java] at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
[java] Could not find the main class: com.oracle.tutorial.jdbc.CoffeesTable
. Program will exit.
[java] Exception in thread "main"
[java] Java Result: 1
BUILD SUCCESSFUL
Total time: 1 second
my java version is
C:\JDBC Tutorial>java -version
java version "1.6.0_26"
Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02, mixed mode)
C:\JDBC Tutorial>javac -version
javac 1.6.0_26
in the mysql-build-properties.xml set this :
<property name="JAVAC" value="C:\\Program Files\\Java\\jdk1.6.0_26\\bin\\javac.exe"/>
<property name="JAVA" value="C:\\Program Files\\Java\\jdk1.6.0_26\\bin\\java.exe"/>
is it possible to not set corectly the path? what's happening? how can i fix it?

java.lang.UnsupportedClassVersionErrorThat would only happen if you have compiled a class with a compiler of version X and then attempt to run it with a VM that is before X.
ant runctAnt is java. So it runs with a VM. It also uses a java compiler. Unless explicitly specified otherwise it is going to use the compiler that corresponds to the VM it is running under.

Exception in thread "main" Unsupported major.minor version 50.0

When i type javac <program name>.java
it compiles.
But when i type java <program name>
i get this error:
Exception in thread "main" java.lang.UnsupportedClassVersionError
<Unsupportedmajor.minor version 50.0>
I type javac -version.
I get 1.6.0_07.
I type java -version
I get 1.3.1_02.
Actually i installed oracle in my system and it uses an older version of jdk..
How do i make oracle and java work with newer version of jdk? How do i remove older version of jdk which is installed with in oracle??

I guess you have windows, and the environment path you can set through dialog of system settings. Right click 'my computer' and choose properties. Find the button for environment settings. Somewhere here you will see Oracle has added som reference to the 1.3 version. Adjust this so it works.
Or, you can run the actual correct verssion of Java you would like from the commandline.
Instead of running:
c:\>java <Program name>try running by spesifying the correct java.exe path:
C:\>c:\program files\java\jre 1.6.0_07\bin\java.exe <program name>Hope this will help
- Roy

Applet will not load in browser Unsupported major.minor version 48.0

I found this page, and many others like it from search the net:
http://forum.java.sun.com/thread.jspa?forumID=421&threadID=345619
When I first got java installed 1.4.2_02, and that is the directory I always work in.
I HAVE installed:
jre 1.5.0
and
JMF2.1.1e
HOWEVER!!! When i go to the Java icon in the toolbar and dub-click it states:
Java(TM) Plug-in: Version 1.3.1_13
Using JRE version 1.3.1_13 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\javasojava
Proxy Configuration: no proxyAdditionally, if I go to windows Control panel it states:
Java Plug-in 1.3.1_13
My very simple applet program does compile with appletviewer, but
throws this error in browser.
Needless to say, this is extremely frustrating.
Have no other problems building java apps or anything classpath related that am aware of.
Here it is:
CLASSPATH=.;C:\PROGRA~1\JMF21~1.1E\lib\sound.jar;C:\PROGRA~1\JMF21~1.1E\lib\jmf.jar;C:\PROGRA~1\JMF21~1.1E\lib;.;.;C:\j2sdk1.4.2_04\jre\lib\ext\sound.jar;C:\j2sdk1.4.2\2
Thank you!

here is what I get when I open the page you mentioned:
==============================================
Error loading class: ArcTest
java.lang.NoClassDefFoundError
java.lang.ClassNotFoundException: ArcTest
     at com/ms/vm/loader/URLClassLoader.loadClass (URLClassLoader.java)
     at com/ms/vm/loader/URLClassLoader.loadClass (URLClassLoader.java)
     at com/ms/applet/AppletPanel.securedClassLoad (AppletPanel.java)
     at com/ms/applet/AppletPanel.processSentEvent (AppletPanel.java)
     at com/ms/applet/AppletPanel.processSentEvent (AppletPanel.java)
     at com/ms/applet/AppletPanel.run (AppletPanel.java)
     at java/lang/Thread.run (Thread.java)Why.. because I refuse sun to run <applet tag applets. As with the msjvm the <applet
tag is history so I don't understand why SUN would use depreceated html code in
their 1.5 examples.
Check what I said about versioning and use the object tag and try to run the following
applet:
http://forum.java.sun.com/thread.jspa?threadID=603571
second post

Unsupported major.minor version

I've been struggling with this error for a while. And I get different numbers, depending on the setup I'm using.
I've read all the related posts, but none of them have helped.
Which combinations work? (i.e. JCDK 2.2.2 with JRE x.x.x, JCDK 2.1 with JRE x.x.x, etc)
Does the eclipse version matter? Because my Eclipse only works with JCDK 2.2.2.
Please add that to the combinations if necessary?
And how do I set the prescribed things in Eclipse?
At Java Card-> Preferences, I selected the 2_2_2 folder, and then:
CLASSPATH is C:\JCDK-2.2.1\api_export_files\javacardx
JAVA_HOME is C:\j2sdk1.4.1_07 (my bin folder is in there)
JC_HOME is C:\JCDK-2.2.2 (the api_export_files etc is in there)
Are there any other places that I need to check are using the correct versions/pointing to the correct folders?

The Eclipse plugins only support JC 2.2.2.
You can use eclipse without these plugins. You can use the Ant task from the JCDK 2.2.2 along with the converter.jar and api.jar from an older JCDK to convert your project. You would also need to use the command line tools directly to test your code (cref etc). Make sure you adjust the compiler settings in Eclipse. You can set the target version to 1.3 for older JCDK's.
Cheers,
Shane

Aglets-java.lang.UnsupportedClassVersionError:Unsupported major.minor versi

hi! I am doing project using aglets while i am following code i am getting error as shown below.pls help me.
import com.ibm.aglet.*;
public class CreatedAglet extends Aglet
public void onCreation(Object init)
System.out.println("createdAglet agent created");
public void run()
System.out.println("createdAglet running");
import com.ibm.aglet.*;
public class CreatingAglet extends Aglet
public void onCreation(Object init)
System.out.println("Agent Created");
public void run()
try
AgletContext context = this.getAgletContext();
context.createAglet(null,"CreatedAglet",null);
catch(Exception e)
System.out.println("Exception " + e);
Error :
Microsoft Windows XP [Version 5.1.2600]
java.lang.UnsupportedClassVersionError: CreatingAglet (Unsupported major.minor v
ersion 50.0)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
at com.ibm.aglets.tahiti.AgletClassLoader.loadClassFromCodeBase(Unknown
Source)
at com.ibm.aglets.tahiti.AgletClassLoader.findClassInternal(Unknown Sour
ce)
at com.ibm.aglets.tahiti.AgletClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at com.ibm.aglets.tahiti.ResourceManagerImpl.loadClass(Unknown Source)
at com.ibm.aglets.AgletContextImpl.createAglet(Unknown Source)
at com.ibm.aglets.AgletContextImpl.createAglet(Unknown Source)
at com.ibm.aglets.tahiti.MainWindow$TahitiEventHandler.perform(Unknown S
ource)
at com.ibm.aglets.tahiti.MainWindow$TahitiEventHandler.run(Unknown Sourc
e)
at java.lang.Thread.run(Thread.java:534)
When loading CreatingAglet from atp://system:4434/ : java.lang.UnsupportedClassV
ersionErrorCreatingAglet (Unsupported major.minor version 50.0)
java.lang.ClassNotFoundException: When loading CreatingAglet from atp://system:4
434/ : java.lang.UnsupportedClassVersionErrorCreatingAglet (Unsupported major.mi
nor version 50.0)
at com.ibm.aglets.tahiti.AgletClassLoader.loadClassFromCodeBase(Unknown
Source)
at com.ibm.aglets.tahiti.AgletClassLoader.findClassInternal(Unknown Sour
ce)
at com.ibm.aglets.tahiti.AgletClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at com.ibm.aglets.tahiti.ResourceManagerImpl.loadClass(Unknown Source)
at com.ibm.aglets.AgletContextImpl.createAglet(Unknown Source)
at com.ibm.aglets.AgletContextImpl.createAglet(Unknown Source)
at com.ibm.aglets.tahiti.MainWindow$TahitiEventHandler.perform(Unknown S
ource)
at com.ibm.aglets.tahiti.MainWindow$TahitiEventHandler.run(Unknown Sourc
e)
at java.lang.Thread.run(Thread.java:534)

The error message says that you have a library that is too new for your JDK/VM.
Kaj

Major.minor version

Im getting unsupported major.minor version exception while doing web applications using both tomcat5.0 and weblogic8.1, on the JVMs 1.4 and 1.5.
Where did i do mistake???

You are using different versions of jre and jdk, please change one of them and the problem would go.
Cheers
Varun Rathore

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!

Error (Unsupported major.minor version 49.0) in Servlet - Tomcat 4.1

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