Implementation of Client-Server communication using TCP Socket by Java

Q. Implement the Client-Server Communication by writting a program in Java using TCP Socket.

Ans.

Server side program:

import java.io.*;

import java.net.*;

class mat

{

public static void main(String args[])

{

String data= "Network Lab";

try

{

  ServerSocket serv= new ServerSocket(1234);

  Socket skt= serv.accept();

  System.out.println("Server is connected\n");

  PrintWriter out= new PrintWriter(skt.getOutputStream(),true);

  System.out.println("Sending string:"+data+"\n");

  out.print(data);

  skt.close();

  out.close();

  serv.close();

 }

  catch (Exception e)
  {
   System.out.println("Oops! didn't work \n");
   }
  }
 }

Client side program:

import java.io.*;

import java.net.*;

class lab

{

 public static void main(String args[])

{

  try

    {

     Socket srt= new Socket(InetAddress.getLocalHost(),1234);

     BufferedReader in= new BufferedReader(new InputStreamReader(srt.getInputStream()));

     System.out.println("Receiving String");

     while(!in.ready())

     {

     }

   System.out.println(in.readLine());

   System.out.println("\n");

   in.close();

   }

   catch (Exception e)
  {
   System.out.println("Oops! didn't work out as well \n");
   }
  }
 }

Output:

Server side:

javac mat.java (//enter) 

java mat (//enter)

Server is connected

Sending string: Network Lab

Client side:

javac lab.java (//enter)

java lab (//enter)

Receiving String

Network Lab

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