Employee.java Source code

Introduction

Here is the source code for Employee.java

Source

    File:Employee.java

    import javax.persistence.Entity;
    import javax.persistence.EntityListeners;
    import javax.persistence.GeneratedValue;
    import javax.persistence.Id;
    import javax.persistence.PostRemove;

@Entity

public class Employee implements java.io.Serializable {
  private int id;

  private String firstName;

  private String lastName;

  @Id
  @GeneratedValue
  public int getId() {
    return id;
  }


  @PostRemove
  public void postRemove()
  {
     System.out.println("@PostRemove");
  }

  public void setId(int id) {
    this.id = id;
  }

  public String getFirstName() {
    return firstName;
  }

  public void setFirstName(String first) {
    this.firstName = first;
  }

  public String getLastName() {
    return lastName;
  }

  public void setLastName(String last) {
    this.lastName = last;
  }
}

    File:EmployeeBean.java

    import javax.annotation.Resource;
    import javax.ejb.EJBException;
    import javax.ejb.Stateless;
    import javax.ejb.TransactionManagement;
    import javax.ejb.TransactionManagementType;
    import javax.transaction.UserTransaction;

@Stateless
@TransactionManagement(TransactionManagementType.BEAN)
public class EmployeeBean implements EmployeeServiceLocal, EmployeeServiceRemote {
  @Resource
  UserTransaction tx;

  public EmployeeBean() {
  }

  public void doAction() {
    try {
      try {
        tx.begin();
        // do the work...
        System.out.println("Processing...");
      } finally {
        tx.commit();
      }
    } catch (Exception e) {
      // handle all the tx.begin()/commit() exceptions
      throw new EJBException(e);
    }
  }
}

    File:EmployeeServiceLocal.java

    import java.util.Map;

    import javax.ejb.Local;

@Local
public interface EmployeeServiceLocal {
  public void doAction();
}

    File:EmployeeServiceRemote.java

    import javax.ejb.Remote;

@Remote
public interface EmployeeServiceRemote {
  public void doAction();
}

    File:jndi.properties

    java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces java.naming.provider.url=localhost:1099

    File:Main.java

    import javax.ejb.EJB;
    import javax.naming.InitialContext;

    public class Main {

        public static void main(String[] a) throws Exception {

            EmployeeServiceRemote service = null;

            // Context compEnv = (Context) new InitialContext().lookup("java:comp/env");

            // service = (HelloService)new InitialContext().lookup("java:comp/env/ejb/HelloService");
            service = (EmployeeServiceRemote) new InitialContext().lookup("EmployeeBean/remote");

            service.doAction();

        }

    }