Implementation of Socket Programming Using TCP

/* Implementation of Socket Programming Using TCP */

            //  TCPServer.java : A Simple TCP Server Program

            import java.net.*;

            import java.util.*;

            import java.io.*;

            public class TCPServer

            {

public static void main(String args[]) throws IOException

            {

            try

            {

            int Port;

BufferedReader Buf =new BufferedReader(new

InputStreamReader(System.in));

            System.out.print(" Enter the Port Address : " );

            Port=Integer.parseInt(Buf.readLine());

            ServerSocket ss = new ServerSocket(Port);

            System.out.println(" Wait Client Socket is Connecting ..... ");

            Socket s=ss.accept();

            if(s.isConnected()==true)

            System.out.println(" Client Socket is Connected Succecfully. ");

            OutputStream out = s.getOutputStream();

            PrintWriter p=new PrintWriter(out);

            Date d=new Date();

            p.print(" Current Server Time is : " + d);

            p.flush();

            out.close();

            System.out.println(" Message send Successfully. " );

            }

            catch(Exception e)

                        {

                                      System.out.println(" Error : " + e.getMessage());

                          }

              }

            }

            // TCPClient.java : A simple TCP Client Program

            import java.net.*;

            import java.io.*;

           

            public class TCPClient

            {

            public static void main(String args[]) throws IOException

             {

            try

              {

            int Port;

            BufferedReader Buf =new BufferedReader(new

InputStreamReader(System.in));

            System.out.print(" Enter the Port Address : " );

            Port=Integer.parseInt(Buf.readLine());

            Socket s = new Socket("localhost",Port);

            if(s.isConnected()==true)

            System.out.println(" Server Socket is Connected Succecfully. ");

            InputStream in = s.getInputStream();

            BufferedReader buf=new BufferedReader(new

InputStreamReader(in));

            String str = buf.readLine();

            System.out.println(" Message Received From Server. " );

            System.out.println(str);

            in.close();

            s.close();

               }

            catch(Exception e)

                        {

                              System.out.println(" Error : " + e.getMessage());

                        }

             }

            }

OUTPUT :

TCPServer.java :

javac TCPServer.java

java     TCPServer

 Enter the Port Address : 1234

 Wait Client Socket is Connecting .....

 Client Socket is Connected Succecfully.

 Message send Successfully.

TCPClient.java :

javac TCPClient.java

java     TCPClient

 Enter the Port Address : 1234

 Server Socket is Connected Succecfully.

 Message Received From Server.

 Current Server Time is : Thu Sep 02 19:37:48 IST 2010