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Java Performance
JavaOne programming puzzlers
by Jack Shirazi
July 17, 2003
The JavaOne prgramming puzzlers session is well worth a look if you have any Java geek in you.


I've been going through the published slides from the JavaOne presentations, and I've already extracted the majority of the performance tips (here and here ).

But there are other sessions that are interesting too, and one of those is on programming puzzlers. This is a really fun session, but if you (like me) didn't get to attend you don't have to miss out. The slides at are completely understandable, and well worth looking at whatever your level of Java. Only the most eagle-eyed and knowledgeable programmer is going to get through all ten puzzlers without getting caught out, so if you want to get 10 out of 10, you need to carefully read and understand every single bit of code before guessing answers. This is compulsive for the geeks in us all.

(One little bit of context. For the real-life presentation Joshua Bloch and Neal Gafter wear Sun-logoed overalls and play "Click and Hack, the Type-It Brothers." This may help you to understand the last slide in the PDF presentation).

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About the Blogger

Jack Shirazi is the author of O'Reilly's "Java Performance Tuning" and director of the popular website, the world's premier site for Java performance information. Jack writes articles for many magazines, usually about Java performance related matters. He also oversees the output at, publishing around 1 000 performance tips a year as well as many articles about performance tools, discussion groups, and much more. In his earlier life Jack also published work on protein structure prediction and black hole thermodynamics, and contributed to some Perl5 core modules "back when he had more time".

This weblog entry is Copyright © 2003 Jack Shirazi. All rights reserved.

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