Problem in combined flex java project

[Gerald Anto]

hi friends,
i have installed wtp tool in flex builder for combined flex java
project.
when i write java class as separate and run that is working fine.but
when i work together Flex with java it is not working.i deployed flex
war file in my flex builder 3 .
i edited remote config.xml file for Flex to java class. but when i
call java method, it shows the error as "send failed".

Is there any other thing i have to do in my flex builder 3 for
connecting flex to java methods?

i would be very thankful, you consider me.

the following is my edited remoteconfig.xml file

<?xml version="1.0" encoding="UTF-8"?>
<service id="remoting-service"
class="flex.messaging.services.RemotingService">

<adapters>
<adapter-definition id="java-object"
class="flex.messaging.services.remoting.adapters.JavaAdapter"
default="true"/>
</adapters>

<default-channels>
<channel ref="my-amf"/>
</default-channels>


<destination id="RemoteService">
<properties>
<source>Javas.RemoteServiceHandler</source>
<scope>application</scope>
</properties>
<adapter ref="java-object"/>
</destination>


</service>