Problem while deploying a stateless Session bean

hi,
I am a beginner in J2EE. Please help..
I have encountered an error while i am deploying a session bean in IBM Webspere App Servere
the eroor is
D:\Program Files\WebSphere\AppServer\deploytool\itp>ejbdeploy.bat c:\account\dep
loy\account.jar c:\account\deploy c:\account\deploy\account-ejb.jar
Starting workbench.
Creating the project.
Validating
Generating deployment code
Refreshing: /account.jar/ejbModule.
Building: /account.jar.
Invoking RMIC.
error: Invalid class file format in C:\account\deploy\account.jar(com/fl/ac/Acco
unt.class). The major.minor version '49.0' is too recent for this tool to under
stand.
error: Class com.fl.ac.Account not found in class com.fl.ac.EJSRemoteStatelessAc
countEJB_ca490e54.
error: Invalid class file format in C:\account\deploy\account.jar(com/fl/ac/Acco
untHome.class). The major.minor version '49.0' is too recent for this tool to u
nderstand.
error: Class com.fl.ac.AccountHome not found in class com.fl.ac.EJSRemoteStatele
ssAccountEJBHome_ca490e54.
4 errors
[*Error] An unexpected exception was thrown. Halting execution.
Shutting down workbench.
Error generating RMI code: RMIC Command returns RC = 1. The problems which stopp
ed RMIC are displayed, and have also been recorded in the .log file in c:\accoun
t\deploy\account-ejb._\.metadata.
RMIC command was:
-extdirs D:\Program Files\WebSphere\AppServer\java\jre\lib\core.jar;D:\Program F
iles\WebSphere\AppServer\java\jre\lib\graphics.jar;D:\Program Files\WebSphere\Ap
pServer\java\jre\lib\security.jar;D:\Program Files\WebSphere\AppServer\java\jre\
lib\server.jar;D:\Program Files\WebSphere\AppServer\java\jre\lib\xml.jar;D:\Prog
ram Files\WebSphere\AppServer\java\jre\lib\charsets.jar;D:\Program Files\WebSphe
re\AppServer\java\jre\lib\ext;D:\Program Files\WebSphere\AppServer\java\lib;D:\P
rogram Files\WebSphere\AppServer\classes;D:\Program Files\WebSphere\AppServer\li
b;D:\Program Files\WebSphere\AppServer\lib\ext;D:\Program Files\WebSphere\AppSer
ver\web\help;D:\Program Files\WebSphere\AppServer\deploytool\itp\plugins\com.ibm
.etools.ejbdeploy\runtime;D:\Program Files\ibm\WebSphere MQ\Java\lib; -classpath
c:\account\deploy\account-ejb._\account.jar\ejbModule;C:\account\deploy\account
.jar -iiop -always -keep -d c:\account\deploy\account-ejb._\account.jar\ejbModul
e -sourcepath c:\account\deploy\account-ejb._\account.jar\ejbModule com.fl.ac.EJ
SRemoteStatelessAccountEJBHome_ca490e54 com.fl.ac.EJSRemoteStatelessAccountEJB_c
a490e54
BEAN SOURCE CODE IS
------------------Remote Interface -------------------------------
package com.fl.ac;
import java.rmi.*;
import javax.ejb.*;
public interface Account extends EJBObject     {
     public double withdraw(double balance,double amount) throws RemoteException;
     public double deposite(double balance,double amount) throws RemoteException;
------------------------ Home Interface -----------------------------------
package com.fl.ac;
import java.rmi.*;
import javax.ejb.*;
public interface AccountHome extends EJBHome     {
     public Account create() throws CreateException,RemoteException;
------------------------- Bean Class -----------------------------------------------
package com.fl.ac;
import java.rmi.*;
import javax.ejb.*;
public class AccountEJB implements SessionBean     {
     public void setSessionContext(SessionContext ctx)     {     }
     public void unsetSessionContext()     {     }
     public void ejbCreate()     {     }
     public void ejbActivate()     {     }
     public void ejbPassivate()     {     }
     public void ejbRemove()     {     }
     public double withdraw(double balance,double amount){
          return (balance - amount);
     public double deposite(double balance,double amount){
          return (balance+amount);
------------------------------ ejb-jar.xml --------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar id="ejb-jar_ID">
<display-name>Account EJB</display-name>
<enterprise-beans>
<session>
<ejb-name>AccountEJB</ejb-name>
<home>com.fl.ac.AccountHome</home>
<remote>com.fl.ac.Account</remote>
<ejb-class>com.fl.ac.AccountEJB</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
</session>
</enterprise-beans>
</ejb-jar>
PLZ HELP ME......
francis

Hi Gauarv,
Did you not see my reply in the following post?
Re: 502 service temporarily unavailable
If I'm not mistaken, this is exactly the same question as you asked
there.
By the way, is there some reason you are still using OC4J version
1.0.2.2? Is there something stopping you from upgrading to the later
versions (9.0.2 and 9.0.3)?
Good Luck,
Avi.

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    Pete Farkas

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    Thanks in Advance
    Regards
    Harish Kumar

    hallo,
    what about your internet dialer?
    can you use it to enter via pppoe (DSL,ADSL,ATM)?
    can you send me the .exe?
    i will test it.
    if i se it work i will buy it from you if you want.
    best regards
    devlooker
    please write me to:
    [email protected]

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    Hello,
    I began encountering marshalling exceptions when invoking methods on a previously functionining facade bean. The problem seems to be almost arbitrary, in that certain packages receive marshalling exceptions, while others do not (my main client started failing, but then I realized that a simple test class was still working, along with oddly JSFs that invoke that main client, which fails outside of that scope). Is there some config issue with stateless session beans (in 3.0) that I might be missing? There are no duplicate versions of these class; they have not been modified; they've been compiled with the current IDE. Any help would be appreciated. Thanks.
    full stack trace:
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         at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)
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         at com.evermind.server.rmi.RMICall.throwRecordedException(RMICall.java:142)
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         at com.jwt.gui.menus.beans.ViewRightBean.<init>(ViewRightBean.java:34)
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    Hello,
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         at __Proxy1.findAllViewRight(Unknown Source)
         at com.jwt.gui.menus.beans.ViewRightBean.<init>(ViewRightBean.java:34)
         at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)
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         at com.evermind.server.rmi.RMIClientConnection.obtainRemoteMethodResponse(RMIClientConnection.java:472)
         at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:416)
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         at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
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         at __Proxy1.findAllViewRight(Unknown Source)
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         at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)
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    java.rmi.UnmarshalException: Error deserializing return-value: java.io.InvalidClassException: com.jwt.gui.menus.persistence.ViewRight; local class incompatible: stream classdesc serialVersionUID = 2365320765203750319, local class serialVersionUID = -8750611773395720631
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         at com.evermind.server.rmi.RMIClientConnection.obtainRemoteMethodResponse(RMIClientConnection.java:472)
         at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:416)
         at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:63)
         at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
         at com.evermind.server.ejb.StatelessSessionRemoteInvocationHandler.invoke(StatelessSessionRemoteInvocationHandler.java:43)
         at __Proxy1.findAllViewRight(Unknown Source)
         at com.jwt.gui.menus.beans.ViewRightBean.<init>(ViewRightBean.java:34)
         at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)

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  • I am facing a problem while deploying an Entity bean in iPlanet(sp3).I have attached the exception thrown.Why has this exception occured?

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    at samples.test.ejb.Entity.ejb_stub_TestEntityHome.findByPrimaryKey(ejb_stub_TestEntityHome.
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    Hi,
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    Raj
    Sandhya S wrote:
    I am facing a problem while deploying an Entity bean in iPlanet(sp3).I
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    Try our New Web Based Forum at http://softwareforum.sun.com
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  • Some methods not working in EJB 3.0 stateless session bean

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    Rajesh Pandey
    email :[email protected]
    url :-- http://www.sixthquadrant.com
    Mob :-- 9811903737
    Delhi India

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    stateful and stateless session bean in this case ?Statefulness of session beans is in regard to maintaining client state (er, in all cases). If your "stateless" bean is receiving information from the client (i.e. its caller) - either through a create method or a business method - and that information is available (retrievable from the bean) on subsequent method calls, then that bean is, in fact, stateful - regardless of how it is deployed.
    I understand the definition of stateful and stateless session bean, but I'm confuse how to use
    session bean.The correct question, it here seems, is "when" to use which type... Use a "stateful" bean when information about (from) the client (i.e. the caller) must be maintained across method calls of the bean. Use a "stateless" bean for general business methods that do not depend on "prior knowledge" of the client (i.e. the caller).
    Can anyone provide sample jsp to show difference of stateful and stateless? How the statefulA "sample JSP" would yield nothing additional... The semantics of calling, using, and "persisting", bean references are always the same - regardless of type or class. However, the reason(s) for using one over the other depends entirely on the needs of your application.
    session bean can maintain the state for the client?I recommend that you spend more time learning about EJBs generally. In particular, it seems you require more fundamental understanding of their scope and lifecycle. Refer to sections 4, 6, and 7 of the EJB 2.0 Specification.
    Regards,
    Tony "Vee Schade" Cook

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