[jboss-dev-forums] [Design of JBoss Eclipse IDE (dev)] - How to Lookup a session bean from a Javaclass/Servlet/jsp wi

[AnuSree]

Hi,
I have written stateless session bean in EJB 3.0 Project(JBoss 4.0.5) using JBossIDE for Eclipse,Version: 2.0.0,Build id: 2.0.0.Beta2
And then packaged into calculator.jar

Then i have created a Application client and calculator.jar is added to it's library.

This is the code for SesionBean

package trail.bean;
  | 
  | import javax.ejb.Remote;
  | import javax.ejb.Stateless;
  | import trail.bean.Calculator;
  | import org.jboss.annotation.ejb.RemoteBinding;
  | 
  | @Remote ({Calculator.class})
  | @RemoteBinding (jndiBinding="EJB3Trail/Calculator")
  | public @Stateless class CalculatorBean implements Calculator {
  | 	public double calculate(int start, int end, double growthrate, double saving) {
  |         System.out.println("Inside calculate");
  |         double tmp = Math.pow(1. + growthrate / 12., 12. * (end - start) + 1);
  |         double val=saving * 12. * (tmp - 1) / growthrate;
  |         System.out.println("return Value:"+val);
  |         return saving * 12. * (tmp - 1) / growthrate;
  |     }
  | }

This is the code for Main.Java in App Client

  | import java.text.NumberFormat;
  | import javax.naming.InitialContext;
  | import trail.bean.*;
  | 
  | 
  | public class Main {
  | 	public static void main(String[] args) {
  |        
  |         Calculator cal = null;
  |         
  |         try {
  |             InitialContext ctx = new InitialContext();            
  |             cal = (Calculator) ctx.lookup("EJB3Trail/Calculator");
  |             //cal=(Calculator)ctx.lookup(Calculator.class.getName());
  |            
  |         } catch (Exception e) {
  |             System.out.println("-----------------Exception inside Lookup:"+e);
  |             e.printStackTrace();
  |         }
  | }
  | 
  | 

My problem is while running the Main.java it showing Error messge like this

Exception inside Lookup:javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial
	at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:645)
	at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
	at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:284)
	at javax.naming.InitialContext.lookup(InitialContext.java:351)
	at Main.main(Main.java:18)

Can anybody Help Me.How to Lookup a session bean from a Javaclass/Servlet/jsp with JBoss Server.I'm very new to JBoss and Eclipse
this code work well with SUN AppServer
Thanks for any help. 


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