You might be receiving this error when using the Bluecove library on Windows 7 64bit: Native Library intelbth_x64 not available Native Library bluecove_x64 not available
A quick a dirty solution:
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Some wonderful Bluetooth tutorials on the Java SE platform:
http://www.aviyehuda.com/blog/2010/01/08/connecting-to-bluetooth-devices-with-java/
http://www.substanceofcode.com/2007/07/09/using-bluetooth-stack-in-desktop-application/
Cheerio!