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Select File -> New -> Project -> Java JavaEE -> Java Application Client Project. Select Next.
In the New Project Window give the Project name as ApplicationClient and select Next.
On the Java Settings window. Select the Projects tab and click Add.
Check the box for SimpleEJB and select OK.

This will add the SimpleEJB project to the build path of the Application Client as shown in the figure. Select Finish.

Tip

title	Why did we add the EJB project to build path ??

This is because the build path is used to find the classes referenced by your Application Client source code, and these classes will be required for compilation of Application Client source code.

Right click on ApplicationClient project and create a new Java Class as shown in the following figure:
Give the package name as appclient and the class name as ApplicationClient. Select Finish.

Populate the ApplicationClient.java class 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");

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.

The 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.
Right click on ApplicationClient project under Project Explorer. Select Properties.
Select Java Build Path. Under Java Build Path select Libraries -> Add External JARs.
Browse to <GERONIMO_HOME>\repository\org\apache\openejb\openejb-client\3.0 and select the jar openejb-client-3.0.jar. Select OK.

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