chatserver.java

it is a java chat program Written in a RMI code. its simple to use and can be used as a project.

import java.net.*;
import java.io.*;
import java.util.*;
import java.rmi.*;
import java.rmi.server.*;
import java.rmi.registry.LocateRegistry;
public class ChatServer implements Remote,ServerRemote
{
	private static ChatServer rmi;
	private ClientRemote cr;
	Vector v = new Vector();
	
	public static void main (String[] args)
	{
		System.setSecurityManager(new RMISecurityManager() );
		try
		{
			rmi = new ChatServer();
			System.out.println("Registry is created.");
			UnicastRemoteObject.exportObject(((ServerRemote)rmi));
			Naming.rebind("server",rmi);
			System.out.println("Binding has completed.");
			System.out.println("Server is waiting for Client requests....");
		}
		catch (java.rmi.UnknownHostException uhe)
		{
			System.out.println("Error");
		}
		catch (RemoteException re)
		{
			System.out.println("Error" + re);
		}
		catch (MalformedURLException mURLe)
		{
			System.out.println("Error" + mURLe);
		}
	}
	public int registerClient( ClientRemote cr) throws RemoteException
	{
		int i=0;
		System.out.println("Client is requesting a connection...");
		v.addElement(cr);
		i=v.indexOf(cr);
		System.out.println("Timer is started" +v.size() );
		return i;
	}
	public void removeClient(int i) throws RemoteException
	{
		v.removeElementAt(i);
	}
	public void showText(String str) throws RemoteException
	{
		System.out.println(str);
		for( int i=0; i<v.size(); i++)
		{
			ClientRemote cr1 = (ClientRemote)v.elementAt(i);
			if(cr1 != null)
			cr1.getString(str);
		}
	}
}