i want create a simple chat with private rooms

[Roberto robbi]

Hi!I've created a simple chat...now I want to make a chat that contains private rooms,so one client create a room and the other client coming into this room.
The problem is that I don't know how do I make to create these PRIVATE ROOMS?!
Is there anybody can help me?!

CLIENTI.JAVA

import java.io.*;
import java.net.*;
import java.util.*;
import java.lang.*;

public class Clienti{

String nome;
PrintStream ps;
//String hobby;
//Image mypicture;
//Date birth;



public Clienti (PrintStream ps, String name){

this.ps = ps;
this.name = name;


}

public String getNome(){

return name;
}

public PrintStream getStream() {
return ps;
}

}

CLIENT.JAVA

import java.io.*;
import java.net.*;
import java.lang.*;

public class Client {

public static void main (String args[]){

BufferedReader br = null;
String str = null;
String username = null;
InputStream is = null;
Socket cs = null;
PrintStream pw = null;
BufferedReader stdIn = null;
String str1 = null;
String str2 = null;
int i = 0;


try {

cs = new Socket ("localhost",1234);

br = new BufferedReader (new InputStreamReader (cs.getInputStream()));

pw = new PrintStream (cs.getOutputStream());

stdIn = new BufferedReader ( new InputStreamReader (System.in));

str = br.readLine();


System.out.println(str);

System.out.println ("Insert Username (max 20 characters)");

username = stdIn.readLine();

i = username.length();


while (i==0 || i>20) {//Control username

System.out.println ("Username is not correct");

System.out.println ("Insert Username (max 20 characters)");

username = stdIn.readLine();

i = username.length();

}



pw.println(username);//


new ThreadClient1(br).start();



while (true){



str2 = stdIn.readLine();//Client writes and send it

pw.println(str2);


}

}
catch (Exception e){

System.out.println("Error Connession Server");

} // end try catch

} // end method

} // end class


SERVER.JAVA

import java.io.*;
import java.net.*;
import java.util.*;
import java.lang.*;

public class Server {


public static void main(String[] args) {

VectorHandler vector_hand = new VectorHandler();

System.out.println ("Server in stand-by...");

ServerSocket ss = null;

try{

ss = new ServerSocket (1234);



while (true){ //Server is in stand-by

Socket clientsocket = ss.accept();// Wait socket

new ThreadServer1 (clientsocket, vector_hand).start();

}
}

catch (Exception e){
System.out.println("Error by opened door");

}
}
}


THREADCLIENT1.JAVA

import java.io.*;
import java.net.*;
import java.util.*;
import java.lang.*;

public class ThreadClient1 extends Thread {


private BufferedReader input;


public ThreadClient1 (BufferedReader input){
this.input = input;
}

public void run(){

try{
while (true){
String str1 = input.readLine();//client receive

System.out.println(str1);
}
}
catch (IOException e) {
System.out.println("Error by listening");
}
}
}


THREADSERVER1.JAVA

import java.io.*;
import java.net.*;
import java.util.*;
import java.lang.*;

public class ThreadServer1 extends Thread {

Socket client;
PrintStream p = null;
BufferedReader br = null;
VectorHandler server;
Clienti cliente;

public ThreadServer1 (Socket socket, VectorHandler server){

System.out.println("He/She's coming a new friend by "+socket.getInetAddress());
client = socket;
this.server = server;
}

public void run(){

try{
System.out.println ("Server ready to receive new friends by the 1234 door");

br = new BufferedReader (new InputStreamReader (client.getInputStream()));

p = new PrintStream (client.getOutputStream());

p.println("::WELCOME INTO MY CHAT::");

String myname = br.readLine();//receive the username

System.out.println (" "+ myname+" is coming into the chat ");

p.println("::HI "+ myname + "!NOW YOU ARE COMING INTO THE CHAT!!::");//send the welcome message

cliente = new Clienti (p,myname);//refresh the vector with client that are connected

server.addclienti(cliente);



int numclient = server.counterclient();//conta quanti clienti sono presenti nel vettore (dentro al ciclo perche altrimenti se fosse fuori ogni thread conterebbe diversamente


for (int y=0;y<numclient;y++) {

Clienti current_client = server.name(y);//select at every single element

PrintStream ps = current_client.getStream();

ps.println(myname+" is in the chat");//send it at every client
}


while (true){//Receive and send the messages

String str1 = br.readLine();

System.out.println("<"+myname+"> " + str1);

int numclient = server.counterclient();//conta quanti clienti sono presenti nel vettore (dentro al ciclo perche altrimenti se fosse fuori ogni thread conterebbe diversamente


for (int i=0;i<numclient;i++) {/

Clienti cliente1 = server.nome(i);//select every single element i

PrintStream ps = cliente1.getStream();

ps.println("<"+myname+"> "+str1);//send it ad every single element i
}

}


} // try
catch (Exception e)
{
System.out.println ("Error by communication with the client or the client is disconnetted");

int numberclient = server.counterclient();//conta quanti clienti sono presenti nel vettore (dentro al ciclo perche altrimenti se fosse fuori ogni thread conterebbe diversamente


for (int j=0;j<numberclient;j++)
{
Clienti cliente3 = server.name(j);//select every single element j

cliente3.ps.println("a friend is disconnetted");//send this string at every element j

}


server.remove(cliente);//Refresh the vector if somebody exit

} // end try catch
}

}


VECTORHANDLER.JAVA

import java.io.*;
import java.net.*;
import java.util.*;
import java.lang.*;

public class VectorHandler {

Vector vectorclienti;
public VectorHandler() {

vectoreclienti = new Vector();
}

public void addclienti(Clienti newclient) {//add an element
vectorclienti.addElement(newclient);
}

public int counterclienti(){//return the size of vector
return vectorclienti.size();

}

public Clienti name (int i) { //select the element i of the vector
return (Clienti) vectorclienti.elementAt(i);
}

public void remove(Clienti client) {//remove an elemento
vectorclienti.remove(client);
}


}

[Stan James]

It looks like your vector of users is a "room". You'll need a way to have several of those.

A client might be able to ask for a list of public rooms and then join any one of them.

A client might be able to create a private room which others cannot see in the list. But the creator could send an invitation to another user which would let them join a private room.

Does that give you some ideas to work with?

BTW: Try the CODE tag in the UBB buttons below the post editor. That will preserve all your indenting and other formatting, making things much easier on readers.

Cheers!

[Roberto robbi]

Hi!thanks for your answer...
I was thinking that the Object Rooms should be a vector and if clients are more than 4, the next client, who is connected, goes into the new room.

can you help me?!?

[Peter Chase]

Vector should never be used in new code, unless you are stuck with Java 1.1.

Use ArrayList in preference.

If you are using Java 5 or later, consider using generics to give your ArrayLists type safety.