Error allocating a servlet instance

Hi all,

I get the following error while running a servlet...

I have JDK 1.4 , JRE 1.4 in my system and also JRE 1.5 ...

exception

javax.servlet.ServletException: Error allocating a servlet instance
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
java.lang.Thread.run(Thread.java:534)

root cause

java.lang.UnsupportedClassVersionError: com/abcd/WelcomeClass (Unsupported major.minor version 49.0)
java.lang.ClassLoader.defineClass0(Native Method)
java.lang.ClassLoader.defineClass(ClassLoader.java:537..........

Can any of you shed some light ....what could be the problem...

Regards

Looks like you may have a class file that's corrupt or out-of-date.

I think class version 49.0 is the one used by Java 5; maybe you're running it under 1.4. Try compiling it with the "-target 1.4" option.

Hi...

The Welcome class is nothing but the HelloServlet class code...

found in servlet-examples.

Also i have only JRE 1.5 and not JDK 1.5 in my system..

Regards

The container in which you are running the servlet might be using JRE 1.4.
[ January 04, 2006: Message edited by: Reghu Ram T ]

Yes JAVA_HOME is set to JDK 1.4...

and tomcat uses this...

Set your home to JDK 1.5 or JRE 1.5

Thanks...I will change it and test ...

Regards
[ January 05, 2006: Message edited by: A Kumar ]

Hi,

I uninstalled the JRE 1.5 and changed the settings in the Eclipse workbench

It is working now...

Thank you...

Regards
AKumar

The above solution is the best one i.e recompiling the source when there are version differences

Thanks

"jaya ajay",

There aren't many rules that you need to worry about here on the Ranch, but one that we take very seriously regards the use of proper names. Please take a look at the JavaRanch Naming Policy and adjust your display name to match it.

In particular, your display name must be a first and a last name separated by a space character, and must not be obviously fictitious.

Thanks!
bear
JavaRanch Sheriff

Bear,

Just to clarify, 'Jaya Ajay' is a common name here in India. Its not fictitious

Regards,
Ram.

Thanks ramprasad. You gotta admit it looks suspicious. Sort of as if I used "bear raeb".

Jaya, can you send me an email or PM to corrorborate?

Hi Friends!!

I admit the name caused confusion and didn`t gone through the naming rules of the forum!!

But Whats there in the name?

Our main focus is to solve/support/discuss problems related to technology.

(I hope above words are taken in their own respect)

"Passioner",
Welcome to the JavaRanch.

We're a friendly group, but we do require members to have valid display names.

Display names must be two words: your first name, a space, then your last name. Fictitious names are not allowed.

Please edit your profile and correct your display name since accounts with display names get deleted.

What's in a name? The invalid ones get deleted, that's what

Dave
[ August 18, 2006: Message edited by: David O'Meara ]

Originally posted by David O'Meara:
What's in a name? The invalid ones get deleted, that's what

Indeed. In fact, this is your final warning. Please change your display name to one that is valid prior to your next post in order to avoid having your account disabled.

bear
Forum sheriff