title: Build android project using Ant
body: <p>I need to make an auto build system. I have a library project and 5 other projects that references this library project. My rquirement is like if I type "ant project_name" in command prompt corresponding project should be build. I have downloaded Ant in my system. But I dont know how to script it and where to create the script. I have gone through many tutorials. But did not get an idea. I am new to Ant. Please help me.</p>
  
  <p><strong>EDIT</strong>
  Where i need to write the script to build the project?can anyone give me an example of building a project using Ant?</p>