Develop your own MSN java client.

Now, use msnmlib 1.2(the website is in Korean), you can write programs as client to MSN servers.
You can write msn robots or your own MSN Messenger use Java.

Here I have a very short tutorial on how to use msnmlib 1.2, and my Java development IDE is Eclipse 3.0

Prepare:If you had already downloaded msnmlib 1.2 package from offical project website,  then unzip it to any folder on your HDD.Here I use d:java_devcommon ,you will get a jar file: msnm.jar.Otherwise, you have to download latest version of msnmlib from the offical web site or the project page on sourceforge

First step, open your Eclipse IDE and use New Project wizard to create a new java project in your default workspace(ofcoz, you can use another workspace), and name your project(here I use jRCS,which means java Realtime Customer Servcie System)

Second, In Eclipse, Select menu Window--> Prefence, expand Java node in left treeview,
and then expand Build path node in Java node, and then select node User Libraries. We will add a new user library refer to the path where you place your msnmlib jar file. Click new... to add a new user library MSN_LIB and click Add Jars... to make user library variable refer to msnmlib jar file:d:java_devcommonmsnm.jar

Now, edit properties of project jRCS by select context menu of jRCS node in Project Explorer. Here we will edit Java Build Path and add a new library for this project. Of coz, we will add pre-defined User Library MSN_LIB here.

Ok, finally, we have our development environment set up. It's time for coding!

Coding Step 1: Create your own MsnAdapter class for an adapter that can listen to events fired by MSN Messenger. You should make you adapter class extend from the parent class rath.msnm.event.MsnAdapter. MsnAdapter class has more 10 methods for event listening. but you have not to implement all the methods, and by user Eclipse New Class Wizard, it is not a hard job to implement a lot of methods. For short and easy, We only implement method MsnAdapter.instantMessageReceived(SwitchboardSession ss, MsnFriend friend,            MimeMessage mime).
Method instantMessageReceived is invoked by MsnMessenger instance every time when you receive a new message (MimeMessage) from MsnFriend.
Here is my code to reply to the friend "How are you doing":

public class MSNAdapter extends MsnAdapter {
 MSNMessenger msn;

 public MSNAdapter(MSNMessenger msn) {
this.msn = msn;
}

 public void instantMessageReceived(SwitchboardSession ss, 
MsnFriend friend, MimeMessage mime) {
 System.out.println(friend.getFriendlyName()
 +" send me some msg:"+mime.getMessage());
 try
 {
 // create a new message
 MimeMessage mm = new MimeMessage();

 // remember to append  

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