Bezier Curves as Ellipses
A couple weeks ago, I was exploring the source code for the Java runtime classes, trying to figure out exactly how Java draws a circle, and was surprised at what I...
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Form validation using custom attributes
Background A couple months ago, a friend’s daughter came to me for help with a website she was writing for a diabetes seminar registration page. The input form...
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Building a Java Applet Sudoku Bot
(Warning: huge and crazy, with no practical target audience that I can imagine.) Background I’ve been interested in the game of Sudoku since it became popular a...
Read MoreJava Swing applet to calculate Fibonacci numbers
I understand this is a common skill builder in Java courses. To write this from scratch, you need to understand Swing input fields, layout management, action listeners,...
Read MoreConcise Perl
One of my favorite tech blogs is the relatively new Ksplice Software Blog, recently made popular with its unique solution to the recent Linux kernel exploit. In late May...
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Detecting when a mouse cursor is near a line
Detecting when a mouse cursor is near a line Warning, this post contains math! First, I’m abandoning all of my “recreational” coding projects save one:...
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