Practical Implementation Of Client Server Model Using Tcp/ip

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Server — Client Communication using TCP/IP

Server-client model is a communication model for sharing the resource and providing the service to different machines. The server isthe main system that provides the resources and different kinds of services when a client requests to use it.

1) First open the two notepads.
A] In the first notepad, type the code for server-side and save it as the same class name which you have provided in the code and with the extension .java
For Example, MyServer.java

import java.net.*; import java.io.*; class MyServer { public static void main(String args[])throws Exception { ServerSocket ss=new ServerSocket(3333); Socket s=ss.accept(); DataInputStream din=new DataInputStream(s.getInputStream()); DataOutputStream dout=new DataOutputStream(s.getOutputStream()); BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); String str=””,str2=””; while(!str.equals(“stop”)) { str=din.readUTF(); System.out.println(“client says: “+str); str2=br.readLine(); dout.writeUTF(str2); dout.flush(); } din.close(); s.close(); ss.close(); }

B] In the ...
... second notepad, type the code for the client side and save it as the same class name which you have provided in the code and with the extension .java
For Example, MyClient.java

import java.net.*; import java.io.*; class MyClient { public static void main(String args[])throws Exception { Socket s=new Socket(“localhost”,3333); DataInputStream din=new DataInputStream(s.getInputStream()); DataOutputStream dout=new DataOutputStream(s.getOutputStream()); BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); String str=””,str2=””; while(!str.equals(“stop”)) { str=br.readLine(); dout.writeUTF(str); dout.flush(); str2=din.readUTF(); System.out.println(“Server says: “+str2); } dout.close(); s.close(); } }

2) Output for the code:-
A] Server-Side :

B] Client-Side :

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