Get blank page in Sun Java System Application Server Platform Edition 8

Question

I installed Sun Java� System Application Server Platform Edition 8 and got blank page in http://localhost:1100/ and http://localhost:1100/hello/.
The port 1100 is my default port of HTTP port.
My enviroment:
Win2000 professional
j2sdk1.4.2_05
Tomcat 4.1 (use port : 8080, and it works fine after installing Sun Java� System Application Server Platform Edition 8 )
Anybody can help me to solve this problem? I really want to learn J2EE by using this way.
This is my server.log when invoking the URL http://localhost:1100/ or http://localhost:1100/hello/ .
===============================================================================
|sun-appserver-pe8.0.0_01|org.apache.coyote.tomcat5.CoyoteAdapter|_ThreadID=12;|An exception or error occurred in the container during the request processing
java.lang.NoSuchMethodError: javax.servlet.http.HttpServletRequest.getLocalPort()I
     at com.sun.enterprise.web.VirtualServerMappingValve.invoke(VirtualServerMappingValve.java:138)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:936)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:165)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:683)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:604)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:542)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:647)
     at java.lang.Thread.run(Thread.java:534)

Answer 1

The way i solved it was the following :
I removed all java related packages/applications/servers etc existing in my pc .
my meaning of remove is complete uninstallation of any java application .
then i installed back again j2sdk1.42_05 then i installed the sun application server .
everything was succesful since then .
If you have any java version installed in your pc , for example j2sdk1.4.2_05 and this
package supports previous servers or other java applications and then you install
sun application server , it doesn't work .
It seems the previous java apps . don't "release" some java resources which are
used or can be used by sun application server .
I hope this can be useful to you .
good luck .
FGOM .