JMessenger first connects to the jServer, specified by its IP-address and port number.

Find the thread of recipient and forward it to him In SocketServer process the messages based on their type public synchronized void handle( int ID, Message msg) Message msg = (Message) streamIn.readObject() In ServerThread read the incoming message and hand it to SocketServer Once the connection isĮstablished, ServerThread will listen for any messages and hand it over to SocketServer to process.

The job of SocketServer is to wait for connections and for each connection start a new thread ServerThread. On startup the SocketServer runs inĪ separate thread. There are two main classes in jServer for handling connections and messages. Recipient: Username of recipient of the message.type: This can be set to message, login, newuser, etc.Message structureĮach message in jMessenger has four fields: In many cases, if jMessenger cannot find the server then adjust firewall to give it network access.īoth applications are written in Netbeans and you can import source files in Netbeans to view and edit them.On jMessenger select ' History.xml' as history file.This file contains usernames and passwords. On jServer select ' data.xml' as database file.Run the jar files jMessenger.jar and jServer.jar and do the following: Support for both public and private messages.Handles multiple users at the same time.

It is entirely based on Java and consists of two parts: jMessenger (client application) and jServer (server application). In this article I am demonstrating a chat application which can handle multiple users at the same time.

Multi chat client java