HelloWorld EJB Deploying in Sun One Application Server 7 under Windows

[Ashik Uzzaman]

I have started preparing and deploying a simple EJB in Sun One Application Server 7. So I thought I can go with you here...
Step-1: Download and Install SunOne Application Server 7
Download SunOne Application Server 7 from http://wwws.sun.com/software/products/appsrvr/appsrvr_download.html
Unzip the downloaded ZIP file to your chosen directory. I have installed it in my office's C:\winxpprog\javaGroup\sun1as7 and in my home PC's D:\win2kProg\javaGroup\SunOneApp7 directory. We'll call it %SunOneHome% from now on. Now you can use your control panel's Services tab or Start Menu\Sun Microsystems sub menu to start stop the application server.
Now write down a simple Stateless Session Enterprise JavaBean that say's HelloWorld to its users.
Step-2: Write Down The Remote Interface
HelloWorldRemote.java

package com.javaRanch.sunOne;
/**
* This is the remote interface that the client calls to
* have the EJB do the work.
*/
public interface HelloWorldRemote extends javax.ejb.EJBObject {
public String hello() throws java.rmi.RemoteException;
}

Step-3: Write Down The Home Interface
HelloWorldHome.java
package com.javaRanch.sunOne;
/**
* HelloWorldHome provides the container the means to create and destroy EJB's.
*/
public interface HelloWorldHome extends javax.ejb.EJBHome
{
HelloWorldRemote create() throws java.rmi.RemoteException, javax.ejb.CreateException;
}
Step-4: Write Down The Enterprise Bean
HelloWorldBean.java

import javax.ejb.SessionContext;
/**
* This class is the actual implementation of the business logic. Now it's very simple.    :)   
*/
public class HelloWorldBean implements javax.ejb.SessionBean {
private SessionContext ctx;
public void setSessionContext(SessionContext ctx) {
this.ctx = ctx;
}
public void ejbCreate(){
System.out.println( "ejbCreate() called..." );
}
public void ejbRemove() {
System.out.println( "ejbRemove() called..." );
}
public void ejbActivate() {
System.out.println( "ejbActivate() called..." );
}
public void ejbPassivate() {
System.out.println( "ejbPassivate() called..." );
}
/**
* The method called to display the string "Hello World! Hello Ranchers!!" on the client.
*/
public String hello() {
System.out.println( "hello() called..." );
return "Hello World! Hello Ranchers!!";
}
}

Coming with the later parts soon.
[ August 10, 2003: Message edited by: Ashik uzzaman ]

[Ashik Uzzaman]

Step-5: Compile The Codes
Remember that when you are compiling the codes you have to get the javax.ejb API within your classpath. For J2SDK Reference Implementation we use j2ee.jar file, for JBoss we use jboss-j2ee.jar file and for Sun One Application Server 7, I found those API in %SunOneHome%\lib\appserv-ext.jar file. I don't find reason for why it was not in the appserv-rt.jar file; at least its nothing to keep in ext (extra), right?
Before compiling your codes in your %Project_Home% (where you kept all your source codes, for me it was C:\winxpprog\coding\sun1as7tut), I think you have installed JDK 1.3 or JDK 1.4 in your machine appropriately. So give the following command after changing to your directory to your source code repository.
javac - classpath %SunOneHome%\lib\appserv-ext.jar -d . *.java
It should create the following directory strucutre "%Project_Home%\com\javaRanch\sunOne" and three class files there. If it happends for you, then you have done the compilation part.