module demo
{
    module hello 
    {
        interface GoodDay 
        {    
            string hello_simple();
            
            wstring hello_wide( in wstring msg );            
        };      
    };
};

package demo.hello;

import org.omg.CORBA.*;

public class GoodDayImpl 
    extends GoodDayPOA
{
  private String location;

  public GoodDayImpl( String location ) 
  {
    this.location = location;
  }

  public String hello_simple() 
  {
    return "Hello World, from " + location;
  }

  public String hello_wide(String wide_msg) 
  {
    System.out.println("The message is: " + wide_msg );
    return "Hello W?rld, from ? 1 2 3 0 *&^%$#@!@";            
  }
}

package demo.hello;

import java.io.*;
import org.omg.CORBA.*;
import org.omg.PortableServer.*;
import org.omg.CosNaming.*;

public class Server 
{
  public static void main(String[] args) 
  {
    try 
    {            
      //init ORB
      ORB orb = ORB.init( args, null );

      //init POA
      POA poa = POAHelper.narrow( orb.resolve_initial_references( "RootPOA" ));
      poa.the_POAManager().activate();

      // create a GoodDay object
      GoodDayImpl goodDayImpl = new GoodDayImpl( "Somewhere" );	
    
      // create the object reference
      org.omg.CORBA.Object obj = poa.servant_to_reference( goodDayImpl );

      if ( args.length > 0 ) 
      {
        PrintWriter pw = 
            new PrintWriter( new FileWriter( args[ 0 ] ));

        // print stringified object reference to file
        pw.println( orb.object_to_string( obj ));
        pw.flush();
        pw.close();
      }
      else
      {
        // register server with naming context
        NamingContextExt nc = NamingContextExtHelper.narrow(
                              orb.resolve_initial_references("NameService"));     
        nc.bind( nc.to_name("HelloServer.service"), obj);
      }
      // wait for requests
      orb.run();
    }
    catch( Exception e ) 
    {
      System.out.println( e );
    }
  }
}

package demo.hello;

import java.io.*;
import org.omg.CORBA.*;
import org.omg.CosNaming.*;

public class Client 
{
  public static void main( String args[] ) 
  {
    try 
    {
      // initialize the ORB.
      ORB orb = ORB.init( args, null );
      GoodDay goodDay;

      if ( args.length > 0 ) 
      {
        File f = new File( args[ 0 ] );

        // check if file exists
        if ( ! f.exists() )
        {
          System.out.println("File " + args[0] + " does not exist.");
          System.exit( -1 );
        }
            
        // check if args[0] points to a directory
        if ( f.isDirectory() )
        {
          System.out.println("File " + args[0] + " is a directory.");
          System.exit( -1 );
        }

        BufferedReader br = new BufferedReader( new FileReader( f ));
		// get object reference from command-line argument file
		org.omg.CORBA.Object obj = orb.string_to_object( br.readLine() );
	    br.close();

	    // and narrow it to HelloWorld.GoodDay
	    // if this fails, a BAD_PARAM will be thrown
		goodDay = GoodDayHelper.narrow( obj );
      }
      else
      {
        // get hold of the naming service
        NamingContextExt nc = 
            NamingContextExtHelper.narrow(orb.resolve_initial_references("NameService"));     
        goodDay = GoodDayHelper.narrow(nc.resolve(nc.to_name("HelloServer.service")));
      }

      // invoke the operation and print the result
      System.out.println( goodDay.hello_simple() );

      // invoke the operation again and print the wide string result
      System.out.println( "wide string: " + 
               goodDay.hello_wide( "Hello W?rld, from ??1 2 3 0 *&^%$#@!@"));
    }
    catch( Exception ex ) 
    {
      System.err.println( ex );
    }
  }
}

Suppose you are using Win32 platform and have installed .Net Framework v1.1 and J# SDK 
already.

1.	create a working directory 

2.	copy the <tomorb_home>\config\jsharp\tomorb_config.xml into the 
	working directory and edit the name service reference as 
	follow:

	ORBInitRef.NameService=file://c:/NS_Ref
	
3.	Put all the source codes into this directory 

4.	Make sure to copy the runtime libraries from the 
	distribution directory (dist\net-1.1\bin)
	
	copy <tomorb home>\dist\net-1.1\js-bin\TomORB*.* .	
		or 
	fire the following command to register strongname libraries into GAC 
	<tomorb_home>\config\install-js-net-library.bat
	
5.	Compile the Idl file (server.idl) type the following command 
	to compile the IDL script into VB.Net: 
	<tomorb_home>\dist\net-1.1\js-bin\idl2c.exe -lang JS -I . -d Generated server.idl 
		or 
	<tomorb_home>\dist\net-1.1\bin\idl2c.exe -lang JS -I . -d Generated server.idl
	
6.	Compile the source files 

	
	vjc -target:exe -out:hello-server.exe Server.java GoodDayImpl.java /recurse:Generated\*.java 
		/r:TomORB_Based4js,TomORB4js,TomORB_CosNaming4js,System,System.Xml vjc 
		-target:exe -out:hello-client.exe Client.java GoodDayImpl.java 
		/recurse:Generated\*.java 
		/r:TomORB_Based4js,TomORB4js,TomORB_CosNaming4js,System,System.Xml 
	
		
7.	Start name service<tomorb_home>\dist\net-1.1\js-bin\namesvc 
	c:\NS_Ref run server program in one console with the following 
	command:
		hello-server.exe
		
8.	run client program in another console to test against the server program

Compile and test the programs by running the NAnt script