Super Simplified EJB 3.0

EJB 3.0 Simplified:

Make Directory :
C:\simple-ejb3> &     C:\simple-ejb3\classes> & C:\simple-ejb3\src\foo>
C:\simple-ejb3> tree /A /F
+---classes
|   \---foo
\---src
  \---foo
             Client.java
             FooBean.java
             FooRemote.java
---------------
FooRemote.java:
---------------

package foo;
import javax.ejb.*;

@Remote
public interface FooRemote {
  public String echo(String s);
}

-------------
FooBean.java:
-------------

package foo;
import javax.ejb.*;

@Stateless
public class FooBean implements     FooRemote {
  public String echo(String s) {
  return s;
}
}

-----------
Client.java
-----------

package foo;
import javax.ejb.*;
import javax.naming.*;

public class Client {
public static void main(String[]     args) throws Exception {
  //JBoss' default remote jndi:     <ejb-name>/remote
  final String jndiName =     "FooBean/remote";
  Context ic = new     InitialContext();
  System.out.println("about     to look up jndi name " + jndiName);
  Object obj =     ic.lookup(jndiName);
      System.out.println("lookup returned " + obj);

  FooRemote foo = (FooRemote)     obj;
  String s =     foo.echo("Hello Foo on JBoss!");
  System.out.println(foo +     " echo returned " + s);
}
}

Compile using the     command

C:\simple-ejb3\classes>javac-d . -classpath D:\jboss-4.0.4.GA\client\jbossall-c
lient.jar;D:\jboss-4.0.4.GA\client\jboss-ejb3x.jar;D:\jboss-4.0.4.GA\server\defa
ult\lib\*.jar;D:\jboss-4.0.4.GA\lib\*.jar;.C:\simple-ejb3\src\foo\*.java

Start Jboss from bin
C:\simple-ejb3\classes>%JBOSS_HOME%\bin\run.bat

Create and deploy jar in     Jboss deploy

C:\simple-ejb3\classes>jarcvf D:\jboss-4.0.4.GA\server\default\deploy\foo-ejb.j
arfoo\FooBean.class foo\FooRemote.class

   7.  Prepare jndi.properties and log4j.properties somewhere inclient classpath, e.g., In  simple-ejb3\classes directory: create files
jndi.properties:
----------------
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=localhost:1099

log4j.properties:
-----------------
# Set root category priority to INFO and its only appender to CONSOLE.
log4j.rootCategory=INFO, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Threshold=INFO
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=- %m%n
Run ejb client

C:\simple-ejb3\classes>java-cp D:\jboss-4.0.4.GA\lib\*;D:\jboss-4.0.4.GA\client
\*;D:\jboss-4.0.4.GA\server\default\lib\*;.foo.Client
about to look upjndi name FooBean/remote
lookup returnedjboss.j2ee:jar=foo-ejb.jar,name=FooBean,service=EJB3
jboss.j2ee:jar=foo-ejb.jar,name=FooBean,service=EJB3echo returned Hello Foo on
JBoss!
Done

On Jboss server
14:59:54,703INFO  [EJBContainer] STARTED EJB: foo.FooBean ejbName: FooBean
14:59:54,718INFO  [EJB3Deployer] Deployed: file:/D:/jboss-4.0.4.GA/server/defau
lt/deploy/foo-ejb.jar


Link http://javahowto.blogspot.com/2007/11/simple-ejb-3-on-jboss-application.html