k-means clustering

Hi all,
I have a task in which I have data of different classes.And I have to perform K-means clustering on each class to reach the right combination of clusters.

Can somebody give any link of code or help for this.

Thanks
Gaurav

Do an Internet search for "k means java" or "k means code" or "k means algorithm" and you should find plenty of sources to help you - such as http://forums.sun.com/thread.jspa?threadID=750885