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EJB remote interface

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EJB remote interface

EJB remote interface

     

The program given below describes  the way of creating a remote interface in EJB. The meaning of Remote interface in terms of Ejb is the java source file which contain the bean implementation logic. These are very much similar to the RMI Remote interface and provides the business specific functionality of an EJB. Here we have created the Remote interface named SessionBeanRemote.java

@Remote:- This is the annotation which is used to declare the interface as Remote.

String getResult(); String getAddress();String getCompanyname():-These are the methods which are to be defined inside the bean.

 

 

SessionBeanRemote.java

package ejb;

import javax.ejb.Remote;

@Remote
public interface SessionBeanRemote {
  String getResult();

  String getAddress();

  String getCompanyname();
}

SessionBeanBean.java:- This is the session bean in which we will declared all the methods of the Remote interface. This bean is used for controlling the business process and filling the gaps between the data of the entity beans. Here

@Stateless is the annotation which denotes the bean is of  session type.

SessionBeanBean.java

package ejb;

import javax.ejb.Stateless;

@Stateless
public class SessionBeanBean implements SessionBeanRemote {
 public String getResult() {
  return "Hello World";
  }
  public String getAddress() {
  return "Sec-3,D-16/116,Rohini";
  }
  public String getCompanyname() {
  return "Roseindia.net Pvt.Ltd.";
  }
}

Main.java:- This is the client application from which we can access all the methods of  the session bean.

@EJB:-This is the annotation that configure the EJB values for a field or a method. This annotation is a Resource annotation and is used where it is known that the resultant is an EJB interface.

Main.java

package ejb_remote;

import ejb.SessionBeanRemote;
import javax.ejb.EJB;

public class Main {
  @EJB
  private static SessionBeanRemote sessionBeanBean;

  public static void main(String[] args) {
  System.err.println("Accessing Remote Interface using EJB:");
  System.out.println("=================================");
  System.err.println("Name of the Company is : =" + sessionBeanBean.getCompanyname());
  System.err.println("Address of the Company is : =" + sessionBeanBean.getAddress());
  System.err.println("Message is : =" + sessionBeanBean.getResult());
  System.out.println("=================================");
  }
} 

Output of the Program

Accessing Remote Interface using EJB:
=================================
Name of the Company is : =Roseindia.net Pvt.Ltd.
Address of the Company is : =Sec-3,D-16/116,Rohini
Message is : =Hello World
=================================

Download Source code

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Posted on: April 18, 2011

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