TCP Server and Client in Java

This program simply transmits the message entered at client to server.

TCP Server Program

tcpserver.java

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
public class tcpserver {
public static void main(String args[]) throws Exception
    {
    String message;
    ServerSocket ssock = new ServerSocket(6789);
    System.out.println("Server running...");
    while(true)
    {
        Socket connsock = ssock.accept();
        BufferedReader br = new BufferedReader(new InputStreamReader(connsock.getInputStream()));
        message=br.readLine();
        System.out.println("Client sent : "+message);  }
}
}

TCP Client Program

tcpclient.java

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.net.Socket;
public class tcpclient {
public static void main(String args[]) throws Exception
    {
    while(true){
    String message;
    BufferedReader inkbd = new BufferedReader(new InputStreamReader(System.in));
    Socket csock = new Socket("127.0.0.1",6789);
    DataOutputStream ou = new DataOutputStream(csock.getOutputStream());    
    System.out.println("Type message : ");
    message = inkbd.readLine();        
    
    ou.writeBytes(message+"\n");
    csock.close();
    }
}
}