Server/Client problem

[jim delmar]

Hello guys!! New one here. I hava a problem with my code.
Here 's the server code

import java.io.*;
import java.net.*;
import java.security.*;



  public class Server implements Runnable{
  
  private Socket server;
  private static String command,info,message;
  BufferedReader infromclient =null;
  InputStream infromclient2=null;
  DataOutputStream outtoclient =null;
  static BufferedReader infrommaster=null;
  private static int port=6789;
 
 //initialization method 
 Server(Socket server) 
 {
    try
    {	
      this.server=server;
      infromclient =new BufferedReader(new InputStreamReader(server.getInputStream()));
      outtoclient =new DataOutputStream(server.getOutputStream());
      infrommaster=new BufferedReader(new InputStreamReader(System.in));
    }
    catch (IOException e)
    {
    	System.out.println("Exception accessing socket streams: "+e);
    }
 }
 //end of initialization method
 
 // main()
 // Listen for incoming connections and handle them
  public static void main(String[] args) {
  	ThreadGroup clients = new ThreadGroup("clients");
  	System.out.print("Waiting for connections on port " + port + "...");
  	System.out.println("\nIn total there are:"+clients.activeCount()+" clients\n");
    try{
      ServerSocket server = new ServerSocket(port);
      Socket nextsocket;
      
      // waiting for connections
      while(true){
        nextsocket = server.accept();
        Thread client= new Thread(clients,new Server(nextsocket),"client"+(clients.activeCount()+1));
        System.out.println("Client connected");
		System.out.println("There are "+clients.activeCount()+" clients connected");
		client.start();
							
	  }
		
      }
      catch (IOException ioe) {
      System.out.println("IOException on socket listen: " + ioe);
      ioe.printStackTrace();
      }      
 }
 public void run ()
  {  	       	
     try 
      {	     	        
	        message=infromclient.readLine();
	    	System.out.println(message+"\n");
	    	command=infrommaster.readLine();  
	    	outtoclient.writeBytes(command+"\n");
	    	
	    	// showinfo
	     	if (command.equals("showinfo"))
	    	{		
	            	info=infromclient.readLine();
	    			System.out.println("\nClient information\n\n" +info+"\n");	    			
	    	}
	    	
	    	server.close();	    		
      	}    
       catch (IOException ioe) {
        System.out.println("IOException on socket listen: " + ioe);
        ioe.printStackTrace();
        }
     }
}

and here is the client's

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


public class Client
{
	
	public static void main(String args[]) throws Exception 
	{
		String message=" waiting command...";
		String command2;
		String info;
		Socket clientSocket=null;
	    Socket scket=null;    
    	BufferedReader inFromUser=null;
    	DataOutputStream outToServer=null;
    	BufferedReader inFromServer=null;
    	BufferedWriter tosite=null;
		
		try
		{
		
			clientSocket = new Socket(InetAddress.getLocalHost().getHostName(), 6789);
			inFromUser =new BufferedReader(new InputStreamReader(System.in));
			outToServer =new DataOutputStream(clientSocket.getOutputStream());
			inFromServer =new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));		
		}
		catch(UnknownHostException e)
		{
			System.out.println("Problem "+e);
		}
		catch(IOException e)
		{
			System.out.println("Problem "+e);
		}							
		
		outToServer.writeBytes("Client " +InetAddress.getLocalHost().getHostAddress() +message+ "\n");
		command2=inFromServer.readLine();
		System.out.println("From Server:" +command2);
		
		// showinfo
		if (command2.equals("showinfo"))
		{
			try
			{
				InetAddress myip=InetAddress.getLocalHost();
		    	info =("IP: " +myip.getHostAddress()+"\t\t\t\t\t\t\t\t");
				info += ("Host name: " + myip.getHostName()+"\t\t\t\t\t\t\t\t");
				info += ("OS name: " + System.getProperty("os.name")+"\t\t\t\t\t\t\t\t");
				info += ("OS version: " + System.getProperty("os.version")+"\t\t\t\t\t\t");
				info += ("\t\t\tOS architecture: " + System.getProperty("os.arch") + "\n");
				System.out.println("\nSome system information\n" + info);
				outToServer.writeBytes(info);
			}
			catch (Exception e){System.out.println("Exception caught ="+e.getMessage());}
		}
		outToServer.flush();
		outToServer.close();
		inFromUser.close();
		inFromServer.close();
		clientSocket.close();
}
}

So i make a server who waits for connections.When a client connects, if we(the server) send the command showinfo, it responds with some system information.The problem is that it is a multithreaded server and many clients connect.So if for example connect 2 clients at the server we have to type 2 times showinfo and then the clients give us the information. How can i make the clients respond immediately with typing showinfo for each one and don't wait until i type showinfo for all the clients. It's a bit tiring to type 50 times showinfo if there are 50 clients before you can execute your command. Thank you in advance (i have tried some thread synchronization and some sleep() join() commands but i haven't reach a conclusion i hope you can help a bit.)