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Why does EJB needs two interfaces, Home and Remote
Interface?
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Home Interface is the means to connect to the container
Remote Interface is your way to link to the bean
| Is This Answer Correct ? | 15 Yes | 6 No |
Answer / deepti mehta
HOME INTRFACE:- The home interface defines methods that
allow EJB clients to create and find EJB component.
REMOTE INTERFACE:- A remote interfece defines all the
business methods of the enterprise bean that the EJB client
would invoke.
| Is This Answer Correct ? | 13 Yes | 5 No |
Answer / sitaram karancheti
Home Interface: Contains methods that are not tied to a
specific EJB instance (i.e. methods at class level), like
methods for creating removing and finding EJB instance.
Remote Interface: Contains methods tied to a specific EJB
instance, such as methods that provides the actual business
logic.
| Is This Answer Correct ? | 9 Yes | 1 No |
Answer / john doe
The Home Interface is used to create an EJB Object. The Home
interface specifies the Remote interface and calls the
create(). After the EJB Object is created it will return its
reference to the Home Interface.
When a call to a function is made. The client will use this
reference and call the specific remote interface which
inturn will pass the request to the EJB Object. The EJB
Object decides which function has to be called from the EJB
| Is This Answer Correct ? | 9 Yes | 5 No |
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In my project iam integrating telephone line using some bridge. To connect my project to that telephone line they have give some jar file. Using dat i connected with that.. To handle that event like call attented, call disposed and idle time they have give one event listener class.. I did every thing and this class is alsoo called when a particular event is fired. The only thing is i wanna call EJB from that event listener method.. But the EJB is not getting initated and exception is thrown. This below shownn error is occured only i try to call it from this event listener class. In other places EJB calling is working fine.. javax.naming.NoInitialContextException: Cannot instantiate class: org.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException: org/jnp/interfaces/NamingContextFactory] at javax.naming.spi.NamingManager.getInitialContext (NamingManager.java:657) at javax.naming.InitialContext.getDefaultInitCtx (InitialContext.java:247) at javax.naming.InitialContext.init(InitialContext.java:223) at javax.naming.InitialContext.<init> (InitialContext.java:197) at com.kgisl.etrac.desk.servicelocator.ServiceLocator.getInitia lContext(ServiceLocator.java:82) at com.kgisl.etrac.commonUtils.EventListener.getAdministrationE JBRemote(EventListener.java:206) at com.kgisl.etrac.commonUtils.EventListener.CallDispositioned (EventListener.java:65) Caused by: java.lang.ClassNotFoundException: org/jnp/interfaces/NamingContextFactory at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:242) at com.sun.naming.internal.VersionHelper12.loadClass (VersionHelper12.java:42) at javax.naming.spi.NamingManager.getInitialContext (NamingManager.java:654) ... 6 more javax.naming.NoInitialContextException: Cannot instantiate class: org.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException: org/jnp/interfaces/NamingContextFactory] at javax.naming.spi.NamingManager.getInitialContext (NamingManager.java:657) at javax.naming.InitialContext.getDefaultInitCtx (InitialContext.java:247) at javax.naming.InitialContext.init(InitialContext.java:223) at javax.naming.InitialContext.<init> (InitialContext.java:197) at com.kgisl.etrac.desk.servicelocator.ServiceLocator.getInitia lContext(ServiceLocator.java:82) at com.kgisl.etrac.commonUtils.EventListener.getAdministrationE JBRemote(EventListener.java:206) at com.kgisl.etrac.commonUtils.EventListener.CallDispositioned (EventListener.java:65) Caused by: java.lang.ClassNotFoundException: org/jnp/interfaces/NamingContextFactory at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:242) at com.sun.naming.internal.VersionHelper12.loadClass (VersionHelper12.java:42) at javax.naming.spi.NamingManager.getInitialContext (NamingManager.java:654) ... 6 more It would be more help full if i get the solution 10x in advance balaji
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