Token Ring

//Server.java
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;

public class Server implements Runnable{
    static ServerSocket ss;
    Socket s = null;
    Server(Socket s){
        this.s = s;
    }
    public void run(){
        try{
            BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
            while(true)
                System.out.println(br.readLine());
        } catch(Exception e){e.printStackTrace();}
    }
    public static void main(String[] args) throws IOException{
        ss = new ServerSocket(9812);
        System.out.println("Server running on port 5555");
        while(true)
            new Thread(new Server(ss.accept())).start();
    }
}

//Client1.java
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.Socket;
import java.net.ServerSocket;

public class Client1 {
    public static void main(String[] args) throws IOException {
        Socket server = new Socket("localhost", 9812);
        Socket client2 = new ServerSocket(4576).accept();

        PrintStream toServer = new PrintStream(server.getOutputStream());
        PrintStream toClient2 = new PrintStream(client2.getOutputStream());

        BufferedReader fromClient2 = new BufferedReader(new InputStreamReader(client2.getInputStream()));
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        String str = "Token";
        while(true){
            if(str.equals("Token")){
                System.out.print("Do you wan to send a message to the server?");
                if(br.readLine().equals("Yes")){
                    System.out.print("Enter your message: ");
                    toServer.println(br.readLine());
                }
                toClient2.println("Token");
            }
            System.out.println("Waiting for the token.");
            str = fromClient2.readLine();
        }
    }
}


//Client2.java
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.Socket;

public class Client2 {
    public static void main(String[] args) throws IOException {
        Socket server = new Socket("localhost", 9812);
        Socket client1 = new Socket("localhost", 4576);

        PrintStream toServer = new PrintStream(server.getOutputStream());
        PrintStream toClient1 = new PrintStream(client1.getOutputStream());

        BufferedReader fromClient1 = new BufferedReader(new InputStreamReader(client1.getInputStream()));
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        String str = "";

        while(true){
            if(str.equals("Token")){
                System.out.print("Do you wan to send a message to the server?");
                if(br.readLine().equals("Yes")){
                    System.out.print("Enter your message: ");
                    toServer.println(br.readLine());
                }
                toClient1.println("Token");
            }
            System.out.println("Waiting for the token.");
            str = fromClient1.readLine();
        }

    }
}