Application Client EJB Eclipse Glassfish - eclipse

Question

I'm using GlassFish Tools Bundle for Eclipse.
I need to create a bean and a client that tests it. The bean (and its interface) are the following.
package mykPK;
import java.math.BigDecimal;
import javax.ejb.*;
#Stateless
public class ConverterBean implements Converter {
private BigDecimal yenRate = new BigDecimal("115.3100");
private BigDecimal euroRate = new BigDecimal("0.0071");
public BigDecimal dollarToYen(BigDecimal dollars) {
BigDecimal result = dollars.multiply(yenRate);
return result.setScale(2, BigDecimal.ROUND_UP);
}
public BigDecimal yenToEuro(BigDecimal yen) {
BigDecimal result = yen.multiply(euroRate);
return result.setScale(2, BigDecimal.ROUND_UP);
}
}
The interface:
package mykPK;
import java.math.BigDecimal;
import javax.ejb.Remote;
#Remote
public interface Converter {
public BigDecimal dollarToYen(BigDecimal dollars);
public BigDecimal yenToEuro(BigDecimal yen);
}
I create them correctly in an EJB project and run them "as a server". All seems to start correctly.
Now I want to create a client.
I tried to put the client inside the same project, creating a different project ("Application Client Project") or even creating a more general "E application project" with two subproject. The result is the same.
Now, the client code is the following
import java.math.BigDecimal;
import javax.ejb.EJB;
import mykPK.Converter; /*of course to to that, i reference in the client project the
EJB project*/
public class ConverterClient {
#EJB private static Converter converter;
public ConverterClient(String[] args) {
}
public static void main(String[] args) {
ConverterClient client = new ConverterClient(args);
client.doConversion();
}
public void doConversion() {
try {
BigDecimal param = new BigDecimal("100.00");
BigDecimal yenAmount = converter.dollarToYen(param);
System.out.println("$" + param + " is " + yenAmount
+ " Yen.");
BigDecimal euroAmount = converter.yenToEuro(yenAmount);
System.out.println(yenAmount + " Yen is " + euroAmount
+ " Euro.");
System.exit(0);
} catch (Exception ex) {
System.err.println("Caught an unexpected exception!");
ex.printStackTrace();
}
}
}
When I run this file, i always get the same:
Caught an unexpected exception!
java.lang.NullPointerException
at ConverterClient.doConversion(ConverterClient.java:17)
at ConverterClient.main(ConverterClient.java:12)
I suppose this is beacause my client is not in the same container of the bean, and it is not "deployed" (I simply run the file). But when I tried the more general "Enterprise Application Project" the results were the same)
So, where to put the client and give him the access (with #EJB) to the Bean??

Answer 1

You're trying to inject into a non-managed object. You need to grab the initial context and look it up.
Pretty much the same thing as here:
cannot find my bean using the InitialContext.lookup() method

Answer 2

The stack trace suggests that you've directly launched the main method. In order to use injection in the main class, you must use the application client container.

Answer 3

A good example of this working can be found here Packaging your client for use with glassfish's application client container (via the "appclient" command) is shown, as is packaging it as a standalone Java app.