Simple Rmi Program Using Netbeans To Grouplasopaeko

Ranch Hand
posted 15 years ago

Simple Rmi Program Using Netbeans To Grouplasopaeko Download

  • But now I am wondering, how is it if I want to create this project using Netbeans? So that I can create GUI for this project and just run it from the Netbeans IDE. Up until now, I have tried the multiple numbers of way to create it on Netbeans, but each time, the project failed to be run.
  • Concept of RMI application. A RMI application can be divided into two part,Client program and Server program. A Server program creates some remote object, make their references available for the client to invoke method on it. A Client program make request for remote objects on server and invoke method on them.Stub and Skeleton are two important object used for.
  • The main purpose of this article is to describe the advantages of using RMI in the process of developing distributed applications using Java. RMI is one of the classic methods compared to other modern methods (e.g.NET Remoting, WCF Services etc.), used for accessing objects remotely.
Simple Rmi Program Using Netbeans To Grouplasopaeko

I just want to know how to run RMI programs in NetBeans. I went through several articles but nothing helped because most of they are related to the older versions, but I am using 7.0.1. Does Netbeans automatically create RMIREGISTRY? I really want to run them in NetBeans. Running RMI programs does not depend on a particular. For detailed instructions on how to compile and run a simple 'Hello World!' Application on your operating system, see the The 'Hello World' Application lesson of the Java Tutorials. To find information specific to the kind of applications you are developing, use the NetBeans IDE learning trail for that type of application.

  • Optional 'thank-you' note:
Mac
Hi,
I am trying to implement a simple RMI application using Netbeans 4.0 where following exceptions are beign thrrown at the time of executing the server application...
init:
deps-jar:
compile-single:
run-single:
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: myserver.Remote_Interface_Impl_Stub
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:385)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:240)
at sun.rmi.transport.Transport$1.run(Transport.java:153)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
at java.lang.Thread.run(Thread.java:595)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:247)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:223)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:343)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at java.rmi.Naming.rebind(Naming.java:160)
at myserver.Remote_Interface_Server.main(Remote_Interface_Server.java:26)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: myserver.Remote_Interface_Impl_Stub
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:375)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:240)
at sun.rmi.transport.Transport$1.run(Transport.java:153)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.ClassNotFoundException: myserver.Remote_Interface_Impl_Stub
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:430)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:165)
at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:620)
at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:247)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:197)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1538)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1460)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1693)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)
... 9 more
BUILD SUCCESSFUL (total time: 1 minute 1 second)
Everything is working fine in DOS-console environment..
Please help me out in this regard..
Thanking u ...
Regards
Amitav Anand
Ranch Hand

Simple Rmi Program Using Netbeans To Grouplasopaeko File

posted 15 years ago
  • Optional 'thank-you' note:
try by putting the both the stub and skeleton and even the rmi class both in srever and client side in proper pacakage structure .
I face similar problem and solved it this way .
When ur doing it in dos are u doing in ur local pc ? if so both client and server are in the same jvm .

While working on my assignment for the Sun Certified Developer for the Java 2 Platform certification, I discovered that little documentation exists for setting up a simple Remote Method Invocation (RMI) hello world application using Netbeans.

Hopefully this post saves others time that I had to invest. The code here heavily leverage’s that available on Rose India, however, the code on Rose India did not work without modification.

1. Create an Interface named HelloInterface that extends Remote:

import java.rmi.*;

public interface HelloInterface extends Remote {

public String say() throws RemoteException;
}

2. Create a class Hello which implements HelloInterface:

import java.rmi.*;
import java.rmi.server.*;

public class Hello extends UnicastRemoteObject
implements HelloInterface {

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private String message;

public Hello(String msg) throws RemoteException {
message = msg;
}

public String say() throws RemoteException {
return message;
}
}

3. Create a class named HelloServer which, believe it or not, acts as the server. This class creates an entry in the servers RMI registry which is available for the client.

import java.rmi.Naming;
import java.rmi.registry.Registry;

public class HelloServer {

public static void main(String[] args) {
try {
Registry r = java.rmi.registry.LocateRegistry.createRegistry(1099);//1099 is the port number
r.rebind('Hello', new Hello('Arsenal Football Club, THFC forever in our shadow.'));
System.out.println('Server is connected and ready for operation.');
} catch (Exception e) {
System.out.println('Server not connected: ' + e);
}
}
}

4. Write your client class, HelloClient, which invokes the remote methods on your server:

import java.rmi.Naming;

public class HelloClient {

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public static void main(String[] argv) {
try {
HelloInterface hello = (HelloInterface) Naming.lookup('//localhost/Hello');
System.out.println(hello.say());
} catch (Exception e) {
System.out.println('HelloClient exception: ' + e);
}
}
}

That is all your coding coded. Now run the server, then run the client. There lies the foundation for you to take over the world using RMI. As a special bonus, enjoy a picture of Tony Adams.

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Tony Adams, no respect for RMI.

Simple Rmi Program Using Netbeans To Grouplasopaeko Install

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