Android server client communication issue

public class Additional_Server {  
    private static ServerSocket serverSocket;  
    private static Socket clientSocket;  
    private static InputStreamReader inputStreamReader;  
    private static BufferedReader bufferedReader;  
    private static String message;  
    
  public static void main(String[] args) {  
        try {  
            serverSocket = new ServerSocket(2001); // Server socket  
        } catch (IOException e) {  
            System.out.println("Could not listen on port: 2001");  
        }  
        System.out.println("Server started. Listening to the port 2001");  
        while (true) {  
            try {  
                clientSocket = serverSocket.accept(); // accept the client connection  
                inputStreamReader = new InputStreamReader(  
                        clientSocket.getInputStream());  
                bufferedReader = new BufferedReader(inputStreamReader); // get the client message  
                message = bufferedReader.readLine();  
                System.out.println(message);  
                inputStreamReader.close();  
                clientSocket.close();  
            } catch (IOException ex) {  
                System.out.println("Problem in message reading");  
            }  
        }  
    }  
}  

import android.os.Bundle;  
import android.app.Activity;  
import java.io.IOException;  
import java.io.PrintWriter;  
import java.net.Socket;  
import java.net.UnknownHostException;  
import android.view.View;  
import android.widget.Button;  
import android.widget.EditText;  
  
public class TCPclient extends Activity {  
    private Socket client;  
    private PrintWriter printwriter;  
    private EditText textField;  
    private Button button;  
    private String messsage;  
     
 @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_tcpclient);  
        textField = (EditText) findViewById(R.id.Msg); // reference to the text field  
        button = (Button) findViewById(R.id.bSend); // reference to the send button  
        // Button press event listener  
        button.setOnClickListener(new View.OnClickListener() {  
            public void onClick(View v) {  
                messsage = textField.getText().toString(); // get the text message on the text field  
                textField.setText(""); // Reset the text field to blank  
                try {  
                    client = new Socket("127.0.0.1", 2001); // connect to server  
                    printwriter = new PrintWriter(client.getOutputStream(),  
                            true);  
                    printwriter.write(messsage); // write the message to output stream  
                    printwriter.flush();  
                    printwriter.close();  
                    client.close(); // closing the connection  
                } catch (UnknownHostException e) {  
                    e.printStackTrace();  
                } catch (IOException e) {  
                    e.printStackTrace();  
                }  
            }  
        });  
    }  
}