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Category Archives: java

TestNG, part 2

Sunday, February 10, 2008

Since migrating from JUnit 3, TestNG has been wonderful. Groups are the killer feature of TestNG that really make it worth the migration cost. When wanting to test a single method, I no longer need to manually comment or uncomment method names in the suite() method, I can just add a new group [...]

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Shards in your Latte

Sunday, January 20, 2008

Here are the slides from my "Shards in your Latte" PJUG presentation on January 15:
javasharpedges.pdf
The Josh Bloch / Bill Pugh puzzlers talk from JavaOne given at Google. The Elvis example comes straight from here, and they do a better example of describing it than I did.
The Java Puzzlers book.
A couple of things that came [...]

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Bubble, bubble, toil and Double

Saturday, December 8, 2007

Inspired by Weiqi Gao's Friday Java Quiz this week, I came up with a few more curiosities of Java double. What do each of the calls to larger() print? Hint: this puzzle has nothing to do with type conversion loss of precision, it is only about the specified behavior of doubles.

public class Foo [...]

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String Theory

Sunday, December 2, 2007

No, not that string theory. This string theory is testable. In fact, the moral of this story is this: don't make any assumptions about Java. The compiler or the VM. They do crazy stuff, like make your code run better. If you think you have an inefficiency in your [...]

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