8 Minutes Introduction of Regular Expression

This is my 8 Minutes lecture - Introduction to Regular Expression.

The audience is assumed to be collage freshmen and they have very little knowledge about computer science. So the slides is not related with any programming language, like Java or Perl. The most difficult part is explaining something to people not in computer area.

Category >> Java  
If you want to post syntax highlighted code and let me or someone else review it, please put the code inside <pre><code> and </code></pre> tags.
For example:
String foo = "bar";