Write a client and server program for chatting.

Client program: GossipClient.java

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import java.io.*; import java.net.*; public class GossipClient {   public static void main(String[] args) throws Exception   {      Socket sock = new Socket("127.0.0.1", 3000);                                // reading from keyboard (keyRead object)      BufferedReader keyRead = new BufferedReader(new InputStreamReader(System.in));                               // sending to client (pwrite object)      OutputStream ostream = sock.getOutputStream();      PrintWriter pwrite = new PrintWriter(ostream, true);                                 // receiving from server ( receiveRead  object)      InputStream istream = sock.getInputStream();      BufferedReader receiveRead = new BufferedReader(new InputStreamReader(istream));        System.out.println("Start the chitchat, type and press Enter key");        String receiveMessage, sendMessage;                    while(true)      {         sendMessage = keyRead.readLine();  // keyboard reading         pwrite.println(sendMessage);       // sending to server         pwrite.flush();                    // flush the data         if((receiveMessage = receiveRead.readLine()) != null) //receive from server         {             System.out.println(receiveMessage); // displaying at DOS prompt         }               }                   }                     }

Note: To come out of the chat, type Ctrl+C.

Server program: GossipServer.java

Java

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import java.io.*; import java.net.*; public class GossipServer {   public static void main(String[] args) throws Exception   {       ServerSocket sersock = new ServerSocket(3000);       System.out.println("Server  ready for chatting");       Socket sock = sersock.accept( );                                                         // reading from keyboard (keyRead object)       BufferedReader keyRead = new BufferedReader(new InputStreamReader(System.in));                       // sending to client (pwrite object)       OutputStream ostream = sock.getOutputStream();       PrintWriter pwrite = new PrintWriter(ostream, true);                                 // receiving from server ( receiveRead  object)       InputStream istream = sock.getInputStream();       BufferedReader receiveRead = new BufferedReader(new InputStreamReader(istream));         String receiveMessage, sendMessage;                     while(true)       {         if((receiveMessage = receiveRead.readLine()) != null)           {            System.out.println(receiveMessage);                 }                 sendMessage = keyRead.readLine();         pwrite.println(sendMessage);                     pwrite.flush();       }                   }                     }