I want to run a demo for Sphinx 4 using the steps given here: <http://cmusphinx.sourceforge.net/sphinx4/>  

However, I don't understand what it's trying to tell me  

I have java, jre, eclipse-juno and everything needed to compile java as well as android programs
But the tutorial I linked says I should run ant  

What is ant and how do I run it?  

In one of the steps it tells to set environment variables related to java and ant, and it says to do so using 

```
export JAVA_HOME=/usr/local/jdk1.6.0_14
export ANT_HOME=/usr/local/apache-ant-1.8.0
export PATH=/usr/local/jdk1.6.0_10/bin:/usr/local/apache-ant-1.8.0/bin:$PATH  

```

I thought it was supposed to be done in the `Environment Variables` in My Computer properties. What is this export command? 

Is there an easy to understand step by step guide that shows how to run a demo program for Sphinx 4?