Connect multiple clients to a socket server

Hi, I would like to know how to connect several clients to the same socket server in Java. The problem is that when I connect a client  using localhost or ip the next client that connects can not see the message you sent to the server

//clase cliente ya conectada al main de la aplicacion

package sockets3;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;


public class cliente  {
     Scanner sc = new Scanner(System.in);

    public void iniciar(){

ServerSocket server;
Socket socket;
int puerto = 9000;
DataOutputStream salida;
BufferedReader entrada;

 try{

    server = new ServerSocket(puerto);
    socket = new Socket();
    socket = server.accept();
    String thisIp = InetAddress.getLocalHost().getHostAddress();
    String com = "123";


       while ( true){
       System.out.println("*****Conectado*****");
       System.out.println("IP:"+thisIp+"al puerto "+puerto);
       entrada = new BufferedReader(new InputStreamReader(socket.getInputStream()));
       String mensaje = entrada.readLine();
    }
}catch(IOException e){}
 System.out.println("no hay cliente");



    }


}