classification in standalone application in Apache Mahout 0.9

I am looking for simple example in Java (without any shell call) how
to use NaiveBayesClassifier in Apache Mahout 0.9.

I have a samples of text. I want to learn algorithm base on this data
and that I want to classify a new text.

class Main {
public static void main(String[] args) {
//learn algorithm base on some data
//classify some data

There is no example how to do it in Apache Mahout 0.9 !

Thanks for help