Abrir imagem de um ServerSocket?

//Inicia ServerSocket
public class IguanaMarketServerSocket {    
    private static final Integer PORT = 1234;
    
    public IguanaMarketServerSocket(){
        begin();
    }
    
    public void begin(){
        //inicia servidor socket
        try {
            java.net.ServerSocket server = new java.net.ServerSocket(PORT); 
            System.out.println("Servidor iniciado, ouvindo a porta " + PORT);   
            while(true) {
                Socket client = server.accept();             
                new ThreadIguanaMarketServerSocket(client).start();
            }    
        } catch (IOException ex) {
            Logger.getLogger(IguanaMarketServerSocket.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    
    public static void main(String[] args){
        new IguanaMarketServerSocket();
    }
}


//aqui uma thread para as conexoes
public class ThreadIguanaMarketServerSocket extends Thread{
    private Socket client;
    
    public ThreadIguanaMarketServerSocket(Socket client){
        this.client = client;
    }
    
    public void run(){
        try {
            ObjectInputStream entrada = new ObjectInputStream(client.getInputStream());
            DataOutputStream saida  = new DataOutputStream(client.getOutputStream());
            String arquivo = (String)entrada.readObject();
            byte buffer[] = new byte[512];
            FileInputStream file = new FileInputStream(arquivo);
            DataInputStream arq = new DataInputStream(file);
            saida.flush();
            int leitura = arq.read(buffer);
            while(leitura != - 1) {
                if(leitura != - 2) {
                    saida.write(buffer,0,leitura);
                }
                leitura = arq.read(buffer);
            }
            System.out.println("Cliente atendido com sucesso: " + arquivo +
            client.getRemoteSocketAddress().toString());
            entrada.close();
            saida.close();
            client.close();
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(ThreadIguanaMarketServerSocket.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(ThreadIguanaMarketServerSocket.class.getName()).log(Level.SEVERE, null, ex);
        }
    }    
}


//aqui o Client Socket.
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
    try{        
        Socket sk = new Socket("localhost", 1234);
        ObjectOutputStream saida = new ObjectOutputStream(sk.getOutputStream());
        saida.writeObject("\\Java.png"); //a imagem que quero
                
        DataInputStream entrada = new DataInputStream(sk.getInputStream());
        FileOutputStream sarq = new FileOutputStream("/IguanaSistemas/imagem.png"); //tenho q salvar a imagem
        byte[] br = new byte[512];
        int leitura = entrada.read(br);
        while(leitura != -1) {
            if(leitura != -2) {
                sarq.write(br,0,leitura);
            }
            leitura = entrada.read(br);
        }
        saida.close();
        entrada.close();
        sarq.close();
        sk.close();
        //ImageIcon img = new ImageIcon(saida);
        //image.setIcon(img);
     
    }catch(UnknownHostException e){
        
    }catch(IOException e){
        
    }    
}