Need a Help to Run the EJB client

Question

Hello Friends,
I'm using EJB3.0. while running my client side bean I got a Exception like this " javax.naming.NameNotFoundException: maheshwaran.count not bound." I'm new to EJB so i couldn't find specifically what is the mistake in my files.
I created the following files. It are listed below
FileName: count.java
"package maheshwaran;
public interface count {
public int count();
public void set(int val);
public void remove();
FileName2 : countBean.java
"package maheshwaran;
import javax.ejb.*;
import javax.interceptor.Interceptors;
@Stateful
@Remote(count.class)
@Interceptors(countCallBacks.class)
public class countBean implements count{
private int val;
public int count(){
System.out.println("count()");
return ++val;
public void set(int val){
this.val=val;
System.out.println("set()");
@Remove
public void remove(){
System.out.println("remove()");
FileName3: countCallBacks.java
" package maheshwaran;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.ejb.*;
import javax.interceptor.InvocationContext;
public class countCallBacks {
@PostConstruct
public void construct(InvocationContext ctx){
System.out.println("cb:construct()");
@PostActivate
public void activate(InvocationContext ctx){
System.out.println("cb:activate()");
@PrePassivate
public void passivate(InvocationContext ctx){
System.out.println("cb:passivate()");
@PreDestroy
public void destroy(){
System.out.println("cb:destroy()");
The client side class is following: countClient.java
"package maheshwaran;
import javax.naming.*;
public class countClient {
public static final int noofClients=3;
public static void main(String args[]){
try{
Context ctx=new InitialContext(System.getProperties());
count count[]=new count[noofClients];
int countval=0;
System.out.println("Instatntiating Beans");
for(int i=0;i<noofClients;i++){
count=(count) ctx.lookup(count.class.getName());
count.set(countval);
countval=count.count();
System.out.println(countval);
Thread.sleep(100);
System.out.println("Calling count on Beans");
for(int i=0;i<noofClients;i++){
countval=count.count();
System.out.println(countval);
count.remove();
Thread.sleep(50);
}catch(Exception e){e.printStackTrace();}
The Deployment Descriptor file is following: ejb-jar.xml
"><?xml version="1.0" encoding="UTF-8?>
<ejb-jar xmlns="http://java.sun.com/xml/ns/javaee" version="3.0"
xmlns:xsi="http://www.w3.org/2001/XMLschema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/ejb-jar_3_0.xsd">
<description>Stateful Session Bean Example</description>
<display-name>Stateful Session Bean Example</display-name>
<enterprise-beans>
<session>
<ejb-name>countBean</ejb-name>
<business-remote>maheshwaran_dd.count</business-remote>
</business-remote>
<ejb-class>maheshwaran_dd.countBean</ejb-class>
<session-type>Stateful</session-type>
<transaction-type>Container</transaction-type>
</session>
</enterprise-beans>
<interceptors>
<interceptor>
<interceptor-class>maheshwaran_dd.countCallBacks</interceptor-class>
<post-construct>
<lifecycle-callback-method>construct</lifecycle-clallback-method>
</post-construct>
<post-activate>
<lifecycle-callback-method>activate</lifecycle-callback-method>
</post-activate>
<pre-passivate>
<lifecycle-callback-method>passivate</lifecycle-callback-method>
</pre-passivate>
</interceptor>
</interceptors>
<assembly-descriptor>
<interceptor-binding>
<ejb-name>countBean</ejb-name>
<interceptor-class>maheshwaran_dd.countCallBacks</interceptor-class>
</interceptor-binding>
</assembly-descriptor>
</ejb-jar> "
please help me to rectify this problem.
Thanks & regards,
Maheshwaran Devaraj

Answer 1

Hi,
user586 wrote:
i want to write the query to select the coupon whose Expiry date in the table is NOT within 30 days.If you mean expirationdate (datatype: DATE) is not within 30 days (past or future) of run time, then:
SELECT  coupon          -- or whatever columns you want
FROM    table_x
WHERE   expirationdate  NOT BETWEEN  SYSDATE - 30
                            AND      SYSDATE + 30
;