Introduction to Enterprise JavaBeans 3.0 - for JDeveloper 10.1.3.3
When you are reading the Introduction to Enterprise JavaBeans 3.0 in otn.oracle.com you will find that there is no step by step guidance to put the code in JDeveloper.
The version of JDeveloper I am using is 10.1.3.3 and the files that I am running with only Session Bean and its simple client.
For CalculateEJB.java:
import javax.ejb.Remote;
@Remote
public interface CalculateEJB {
String incrementValue();
}
For CalculateEJBLocal.java:
import javax.ejb.Local;
@Local
public interface CalculateEJBLocal {
}
For CalculateEJBBean.java:
import javax.ejb.Stateless;
@Stateless(name="CalculateEJB")
public class CalculateEJBBean implements CalculateEJB, CalculateEJBLocal {
public CalculateEJBBean() {
}
int value = 0;
public String incrementValue()
{
value++;
return "value incremented by 1";
}
}
At last, for the simple client:
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class CalculateEJBClient {
public static void main(String [] args) {
try {
final Context context = getInitialContext();
CalculateEJB calculateEJB =
(CalculateEJB)context.lookup("CalculateEJB");
// Call any of the Remote methods below to access the EJB
System.out.println( calculateEJB.incrementValue( ) );
} catch (Exception ex) {
ex.printStackTrace();
}
}
private static Context getInitialContext() throws NamingException {
// Get InitialContext for Embedded OC4J
// The embedded server must be running for lookups to succeed.
return new InitialContext();
}
}
Complete sample download.
