From: <webtier_at_javadesktop.org>
Date: Sun, 04 Jan 2009 05:56:42 PST

My local interface:

@javax.ejb.Local
public interface Calculator {
    Integer add(Integer x, Integer y);
}

My EJB stateless session bean:

@javax.ejb.Stateless
public class CalculatorImpl implements Calculator {
    public Integer add(Integer x, Integer y) {
        return (x == null || y == null) ? null : x+ y;
    }
}

My JSF-managed bean:

public class Index {
    @EJB
    private Calculator calculator;

    private Integer x;
    private Integer y;
    private Integer result;

    public void action() {
        if (calculator == null) {
            final String error = "You don't know how to use @EJB :)";
            FacesMessage fm = new FacesMessage(FacesMessage.SEVERITY_FATAL, error, error);
            FacesContext.getCurrentInstance().addMessage("form:result", fm);
            result = null;
        }
        else {
            result = calculator.add(x, y);
        }
    }
....

My web.xml has nothing related to ejb.

When I run the application, the calculator is null. Could anybody tell me what my problem is and how to fix it?

Thank you very much.
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