When I run jboss ejb 3.0 tutorial,there is a java file like this:
package org.jboss.tutorial.extended.bean;
import javax.ejb.EJB;
import javax.ejb.Remote;
import javax.ejb.Remove;
import javax.ejb.*;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.PersistenceContextType;
/**
* comment
*
* @author Bill Burke
*/
@Stateful
@Remote(ShoppingCart.class)
public class ShoppingCartBean implements ShoppingCart
{
@PersistenceContext(type=PersistenceContextType.EXTENDED) EntityManager em;
@EJB StatelessLocal stateless;
private Customer customer;
public long createCustomer()
{
customer = new Customer();
customer.setName("William");
em.persist(customer);
return customer.getId();
}
public void update()
{
customer.setName("Bill");
}
public void update2()
{
customer.setName("Billy");
}
public void update3()
{
stateless.update(customer);
}
public Customer find(long id)
{
return em.find(Customer.class, id);
}
@TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED)
public void never()
{
customer.setName("Bob");
}
@Remove
public void checkout()
{
}
}
i can not compile this file ,the error message is can not find symbol
[javac] symbol? class EJB
jboss-ejb3x.jar in the classpath
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