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Dr Design - SSIs, Java Scrollers, and More!

The surgery’s open, and today Dr. Design faces some interesting challenges, from form validation, to SSIs. Let’s get started… and don’t forget to submit your own questions to Dr. Design. I Need Validation! Hi Dr. Design, On my site I have simple feedback and subscription forms that either email me or write to a file. My problem is that if the user presses his enter key while on my form page, it submits....

javaworld

Study guide: Achieve strong performance with threads, Part 3

Glossary of termsconditionA prerequisite for continued execution. The reason one thread waits and another thread notifies the waiting thread.condition variableA Boolean variable that determines whether or not a thread will wait.green threadsThreads that a JVM creates and manages.preemptsInterrupting something in favor of something else. For example, a time-sliced thread scheduler interrupts the currently running thread and assigns a...