title: How to write a Java program which will compile, load, and use code from the web
body: <p>I'm looking to write a Java program which will download a Java source file in text format off the web, compile it, load it, and use it as part of the running program. I've heard this is possible, but don't know how to write the code to make it happen. A fully functioning example or tutorial would be great, if you could point me in the direction of documentation such as this.</p>
  
  <p>Once I learn how it's done, I plan to use this knowledge to build an Android Application which can customize itself with code from the web.</p>