Java Tutorial/EJB3/Entity Update

Update Entity Bean

File: EmployeeBean.java

   <source lang="java">

import javax.ejb.Stateless; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; @Stateless public class EmployeeBean implements EmployeeServiceLocal, EmployeeServiceRemote {

 @PersistenceContext(unitName="EmployeeService") private EntityManager manager;
 public void doAction(){
   Customer cust = new Customer();
   cust.setFirstName("Joe");
   manager.persist(cust);
   
   System.out.println("Saved");
   
   cust = manager.find(Customer.class,cust.getId());
   
   System.out.println(cust.getFirstName());
   cust.setFirstName("new Name");
   
   manager.merge(cust);
   cust = manager.find(Customer.class,cust.getId());
   
   System.out.println(cust.getFirstName());
 }

}</source>