And now for something entirely different...one of my students asked how to write a recursive function in Scala with varargs.
I got a blogger pass for Oracle OpenWorld. Here is my report from the show floor.
Aaron Houston, the fearless leader of the Java Champions, got me a blogger pass to Oracle OpenWorld. Here is what I learned on the opening night.
When you need to produce lots of fairly straightforward graphs, Java2D is your friend. In this blog, I show you how you can render simple images as crisp-looking PDF or EPS files, provided you can draw them on a Graphics2D object.
Recently, I had to draw a bunch of simple images, such as this one
The next edition of my CS1/Java book is going to print soon. At the last minute, we decided to put the real estate of the inside covers to good use and include a “cheat sheet” with the most important Java control structures and libraries. Since it would be particularly embarrassing to have a typo here, I am hoping to enlist the aid of the community.
I just learned how to make Flash screencasts on my Linux system and deliver them (with GlassFish) on a server that the computer science department received as a donation (thanks Sun!!!).
This semester, I am teaching the CS1 course again. If you just teach plain Java, it isn't easy to come up with interesting lab assignments. Some of the students have built exciting animations with Alice in the CS0 course. Somehow, they aren't as excited about printing prime numbers or digits of π in CS1.
I write my lecture slides in XHTML, using the marvelous HTML Slidy package. I just dump
the images into the same directory as the HTML files, which isn't so smart
because it makes it hard to copy a presentation from one directory to another.
I could change my habit, but hey, what is technology for?
I am rewriting a Java book for beginners, and it seems to make so much sense
import static java.lang.System.out;
public class Greeting
public static void main(String args)
When I teach my JSF crash course to my software engineering students,
everyone nods, works through the lab, and I don't hear any JSF issues from them
for a couple of weeks. Then they run into sPAL.