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Q. Write a Java program to fetch date and time from server to client by using TCP Socket.


Ans.


Server side program:


import java.net.*;
import java.io.*;
import java.util.*;

class server
{
public static void main (String args[])
 {
    ServerSocket ss=null;
    Socket cs;
    PrintStream ps;
    BufferedReader dis;
    String inet;
    try
    {
      ss=new ServerSocket(4444);
      System.out.println ("Press Ctrl+c to Quit");
      while(true)
      {
        cs=ss.accept();
        ps=new PrintStream(cs.getOutputStream());
        Date d=new Date();
        ps.println(d);
        dis=new BufferedReader(new InputStreamReader(cs.getInputStream()));
        inet=dis.readLine();
        System.out.println ("Client System/IP address is :" +inet);
        ps.close();
        dis.close();
       }
     }
     catch (IOException e)
     {
       System.out.println("The exception is:" +e);
      }
    }
  }


Client side program:


import java.net.*;

import java.io.*;

class client
{
 public static void main(String args[])
 {
  Socket soc;
  BufferedReader dis;
  String sdate;
  PrintStream ps;
  try
  {
   InetAddress ia= InetAddress.getLocalHost();
   if(args.length==0)
      soc= new Socket(InetAddress.getLocalHost(),4444);
   else
      soc= new Socket(InetAddress.getByName(args[0]),4444);
   dis= new BufferedReader(new InputStreamReader(soc.getInputStream()));
   sdate=dis.readLine();
   System.out.println("The date/time on server is :"+sdate);
   ps= new PrintStream(soc.getOutputStream());
   ps.println(ia);
   ps.close();
  }
  catch (IOException e)
  {
   System.out.println("The exception is:" +e);
   }
  }
 }


Output:


Server Side:

javac server.java (//enter)
java server (//enter)

Press Ctrl+c to Quit.
Client System/IP address is : MyComputer/192.168.0.8


Client Side:

javac clinet.java (//enter)
java client (//enter)
 
The date/time on server is : Thu Feb 07 10:29:07 IST 2019      


socket programming, socket programming in java
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