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1. Select File->New->Project->Java->Java Project. Select Next.
   
   
   
   
   
   
2. In the New Project Window give the Project name ss ApplicationClient and select Next.
   
   
   
   
   
   
3. On the Java Settings window. Select the Projects tab and click add.
   
   
   
   
4. Check the box for SimpleEJB and Select OK.
   
   
   !
   
   
   
5. This will add the SimpleEJB project to the build path of the Application Client as shown in the figure. Select Finish.
   
   
   !
   
   
   

   Tip
   title Why to add EJB project to build path :(
   This is because the build path is used to find the classes referenced by your Client source code. These classes will be required for compilation of Client source code.

6. Right click on package appclient and create a new Java Class.
   
   
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7. Give the class name as ApplicationClient as shown in the figure. Select Finish.
   
   
   !
   
   
   
8. Populate the ApplicationClient.java with the following code
   

   Code Block
   title ApplicationClient.java borderStyle solid
   package appclient; import java.io.BufferedReader; import java.io.InputStreamReader; import java.util.Properties; import ejb.CountryCapital; import javax.naming.Context; import javax.naming.InitialContext; public class ApplicationClient { public static void main(String [] args) { String capital=new String(); try{ Properties prop=new Properties(); prop.put(Context.INITIAL_CONTEXT_FACTORY, "org.apache.openejb.client.RemoteInitialContextFactory"); prop.put("java.naming.provider.url", "ejbd://localhost:4201"); Context context = new InitialContext(prop); CountryCapital myejb = (CountryCapital)context.lookup("CountryCapitalBeanRemote"); System.out.println("Give the name of a country"); BufferedReader in= new BufferedReader(new InputStreamReader(System.in)); String str=""; str=in.readLine(); capital=myejb.capitalName("str"); System.out.println(capital); } catch(Exception e) { e.printStackTrace(); } } }

   
   Let us try to understand following code snippet
   

   Code Block
   title CodeSnippet borderStyle solid
   Properties prop=new Properties(); prop.put(Context.INITIAL_CONTEXT_FACTORY, "org.apache.openejb.client.RemoteInitialContextFactory"); prop.put("java.naming.provider.url", "ejbd://localhost:4201"); Context context = new InitialContext(prop); CountryCapital myejb =(CountryCapital)context.lookup("CountryCapitalBeanRemote");

   
   

   Info
   title Useful Information
   The above code suggests that which InitialContextFactory to be used to create the InitialContext. Here we are using org.apache.openejb.client.RemoteInitialContextFactory to create the InitialContext. In this case as the EJB server is the naming service provider and has naming service runnning at Port 4201. So we need to specify the location of the EJB server. In this case it is ejbd://localhost:4201. Once this is done we have the context that provides us the ability to lookup and get objects.

   
   

   Tip
   title Why is the lookup name CountryCapitalBeanRemote?? :(
   This will be discussed in deploy and run section.

9. Next step is to add org.apache.openejb.client.RemoteInitialContextFactory Class to the build path. This is because the application client needs this Class to create the InitialContext as explained above.
10. Right click on ApplicationClient project under project explorer. Select Properties.
    
    
    
    
    
    
11. Select Java Build Path. Under Java Build Path select Libraries-> Add External JARs.
    
    
    
    
    
    
12. Browse to <GERONIMO_HOME>\repository\org\apache\openejb\openejb-client\3.0-beta-2 and Select the jar openejb-client-3.0-beta-2.jar. Select Ok.

This completes the Application Client Development.

Deploy and Run

This completes the development of the Java application client.section will take you through the deployment of the EJB application. Later we will run the application client with some sample inputs.

1. To deploy the EJB application on to server Export the EJB application as a jar file. Right Click on SimpleEJB application and Select Export->EJB JAR File as shown in the figure.
   
   
   !!
   
   
   
2. Browse to the Destination of your choice and Select Finish. This will export the SimpleEJB application as a jar file. This jar will be later deployed on to Geronimo server
   

   Warning
   title Why to Export EJB? Why cannot I use Eclipse for deploying the EJB application on the server?
   Due to some limitation Eclipse is not able to deploy the EJB application on to server. This issue will be fixed very soon.

   
   
3. Deploy the