Compile EJB files

I download the tutorial of EJB from Sun and try to compile the source files. After I create a New Application, then I open a terminal and enter "ant converter". I got a error message.
My system is Linux.
ant converter
Error: JAVA_HOME is not defined correctly.
We cannot execute /usr/java/jdk1.3.1/bin/java -Xmx128m -Djavax.net.ssl.trustStore=
/usr/java/j2sdkee1.3/lib/security/cacerts.jks -Djava.security.auth.policy=/usr/java/
j2sdkee1.3/lib/security/jaas.policyI'm sure the JAVA_HOME is correct because I can compile other java and JavaBean files.
thanks.

Thanks .
I solve the previous problem by use ant 1.3 instead of ant 1.4.
All the paths are correct, but only ant 1.3 work fine.
Now, I have another problem . After I finished the deployment process, I open a terminal and enter runclient -client ConverterApp.ear -name ConverterClient -textauth. There is a error message
Error:
Blinding name'java:comp/env/ejb/SimpleConverter'
Caught an unexpected exception!
javax.naming.NameNotFoundException . Root exception is org.omg.CosNaming.NamingContextPackage.NotFound.
Please, help me !!
Thanks !

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