package com.jboss.ejb.example.echo;

import java.rmi.RemoteException;

import javax.ejb.CreateException;
import javax.ejb.EJBHome;

public interface EchoHome extends EJBHome {
 public Echo create() throws RemoteException, CreateException;
}

package com.jboss.ejb.example.echo;

import java.rmi.RemoteException;

import javax.ejb.EJBObject;

public interface Echo extends EJBObject {
 public String sayEcho(String name) throws RemoteException;
}

package com.jboss.ejb.example.echo;

import javax.ejb.SessionBean;
import javax.ejb.SessionContext;

public class EchoEJB implements SessionBean {
 public EchoEJB() {
  System.out.println("EchoEJB() method");
 }
 
 //Buseness Method
 public String sayEcho(String name) {
    // System.out.println(name + " enter this server");
    System.out.println("Call EJB!!");
  return "Hi... "+name+"!!!";
 }
 
 //callback method
 public void ejbCreate() {
  System.out.println("ejbCreate() method");
 }

 public void ejbRemove() {
  System.out.println("ejbRemove() method");
 }

 public void ejbActivate() {
  System.out.println("ejbActivate() method");
 }

 public void ejbPassivate() {
  System.out.println("ejbPassivate() method");
 }

 public void setSessionContext(SessionContext sc) {
  System.out.println("setSessionContext() method");
 }
};

<?xml version="1.0"?>

<jboss xmlns="http://java.sun.com/xml/ns/javaee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
                            http://www.jboss.org/j2ee/schema/jboss_5_0.xsd"
 version="3.0">
 <enterprise-beans>
  <session>
   <ejb-name>EchoEJB</ejb-name>
   <jndi-name>com.jboss.ejb.example.Hello</jndi-name>
  </session>
 </enterprise-beans>
</jboss>

package com.jboss.ejb.example.echo.client;

import java.util.Hashtable;

import javax.naming.Context;
import javax.naming.InitialContext;

import com.jboss.ejb.example.echo.Echo;

public class EchoClient {
 public static void main(String[] args) {
  try {

   Hashtable<Object, String> env = new Hashtable<Object, String>();

   env.put(Context.INITIAL_CONTEXT_FACTORY,
     "org.jnp.interfaces.NamingContextFactory");
   env.put(Context.PROVIDER_URL, "localhost:1099");

   Context ctx = new InitialContext(env);
   System.out.println("<<< Before Lookup >>>");

   Echo echo = (Echo)ctx.lookup("com.jboss.ejb.example.Hello");
   System.out.println("<<< After Lookup >>>");

   System.out.println(echo.sayEcho("Ji-Woong Choi"));

   echo.remove();
  } catch (Exception e) {
   e.printStackTrace();
  }
 }
}

<project name="ejb-basic-statelessSession" default="all" basedir=".">

 <!-- set global properties for this build -->
 <property environment="env" />
 <property name="src.dir" value="ejbModule" />
 <property name="build.dir" value="build" />
 <property name="jboss.home" value="/home/jboss/jboss-4.2.3.GA" />
 <property name="server.name" value="default" />
 <property name="app.name" value="hello-ejb" />

 <property name="jboss.server.dir"
  value="${jboss.home}/server/${server.name}" />

 <!-- Classpath Declaration -->
 <path id="compile.classpath">
  <!--
   <fileset dir="${lib.dir}">
   <include name="**/*.jar"/>
   </fileset>
  -->
  <fileset dir="${jboss.server.dir}/lib">
   <include name="**/*.jar" />
  </fileset>
  <pathelement location="${client.jar}" />
 </path>

 <target name="all" depends="clean, init, compile.ejb, jar.ejb, deploy" />

 <target name="init">
  <!-- Create the time stamp -->
  <tstamp />
  <!-- Create the build directory structure used by compile
   and copy the deployment descriptors into it-->
  <mkdir dir="${build.dir}" />
  <mkdir dir="${build.dir}/META-INF" />
  <copy todir="${build.dir}/META-INF">
   <fileset dir="xml">
    <include name="*.xml" />
    <exclude name="build.xml" />
   </fileset>
  </copy>
 </target>

 <!-- Compile ejb classes into the build directory (jar preparation) -->
 <target name="compile.ejb">
  <echo>compile.classpath</echo>
  <javac srcdir="${src.dir}" destdir="${build.dir}"
   classpathref="compile.classpath" />
 </target>

 <!-- Make a standard ejb jar file, including XML deployment descriptors -->
 <target name="jar.ejb" depends="compile.ejb">
  <jar jarfile="${app.name}.jar" basedir="${build.dir}"></jar>
 </target>

 <target name="clean">
  <delete file="./${app.name}.jar" />
  <delete dir="${build.dir}" />
 </target>
 
 <target name="deploy" depends="jar.ejb">
  <copy todir="${jboss.server.dir}/deploy">
   <fileset dir=".">
    <include name="${app.name}.jar" />
   </fileset>
  </copy>
 </target>

 <taskdef name="jmx" classname="org.jboss.ant.JMX">
  <classpath>
   <pathelement path="${jboss.home}/client/jbossjmx-ant.jar" />
   <pathelement
    path="${jboss.home}/client/jbossall-client.jar" />
  </classpath>
 </taskdef>
 
 <target name="redeploy-war">
  <echo message="Redeploy : file:/${war.path}" />
  <jmx>
   <invoke target="jboss.system:service=MainDeployer" operation="redeploy">
    <parameter type="java.lang.String" arg="file:/${war.path}" />
   </invoke>
  </jmx>
 </target>

</project>