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3 great Java articles on SDN

1. Improve Application Performance With SwingWorker in Java SE 6

2. New and Updated Desktop Features in Java SE 6, Part 1

3. New and Updated Desktop Features in Java SE 6, Part 2

All 3 are excellent and very detailed. I've bookmarked them and will study them soon. I'm still reacquainting myself with Java and Java 5 specifically, it added a lot of new features.
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Overcome Java JNI gdb errors on GNU/Linux

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