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Java Chat App for Developers

The document describes a Java program to create a chat application using client-server communication. The program uses sockets to establish a connection between the client and server. The server side creates a server socket and accepts client requests, then sends and receives messages using input/output streams. The client side creates a socket to the server IP, and also sends and receives messages using input/output streams. The client and server can then continuously send messages back and forth to enable chatting.

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NivedhithaV
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200 views5 pages

Java Chat App for Developers

The document describes a Java program to create a chat application using client-server communication. The program uses sockets to establish a connection between the client and server. The server side creates a server socket and accepts client requests, then sends and receives messages using input/output streams. The client side creates a socket to the server IP, and also sends and receives messages using input/output streams. The client and server can then continuously send messages back and forth to enable chatting.

Uploaded by

NivedhithaV
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Chat Application using Client Server Communication

Aim:

To write a java program to implement Chat application using Java.

Algorithm:

Server Side:

Step -1: Start.

Step -2: Import the necessary packages.

Step -3: Under ChatServer class, create a server socket to communicate with the client
using ServerSocket() constructor.

Step – 4: Accept the request from the client using accept() method.

Step – 5: Establish socket connection between client and server using BufferedReader.

Step -6: Send and receive messages to and from client using getInputStream() and
getOutputStream().

Step – 7: Close the socket.

Client Side:

Step - 1: Start.

Step - 2: Import the necessary packages.

Step - 3: Under ChatClient class, create a new socket with IP address of the server system
using Socket() constructor.

Step – 4: Establish socket connection between client and server using BufferedReader.

Step - 5: Send and receive messages to and from client using getInputStream() and
getOutputStream().

Step – 6: Close the socket.


ChatServer.java

import java.io.*;

import java.net.*;

public class ChatServer

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

ServerSocket sersock = new ServerSocket(3000);

System.out.println("Server ready for chatting");

Socket sock = sersock.accept( );

BufferedReader keyRead = new BufferedReader(new InputStreamReader(System.in));

OutputStream ostream = sock.getOutputStream();

PrintWriter pwrite = new PrintWriter(ostream, true);

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();

ChatClient.java

import java.io.*;

import java.net.*;

public class ChatClient

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

Socket sock = new Socket("10.10.16.41", 3000);

BufferedReader keyRead = new BufferedReader(new InputStreamReader(System.in));

OutputStream ostream = sock.getOutputStream();

PrintWriter pwrite = new PrintWriter(ostream, true);

InputStream istream = sock.getInputStream();

BufferedReader receiveRead = new BufferedReader(new InputStreamReader(istream));

System.out.println("Start the chat, type and press Enter key");

String receiveMessage, sendMessage;

while(true)

sendMessage = keyRead.readLine();

pwrite.println(sendMessage);

pwrite.flush();

if((receiveMessage = receiveRead.readLine()) != null)


{

System.out.println(receiveMessage);

Output:

Result:
Thus the Java program to implement Chat application using Client Server Communication is
written, executed and the output is verified.

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