Javax/bluetooth/DiscoveryListener problem

Hi there!
I found this question in another thread but without a solution.
I have a program that makes a bluetooth device inquiry. It is a standard program that can be found many times in the web. The MIDlet uses the DiscoveryListener interface. I can compile the program without errors. But when it runs on the emulator (or phone) it comes up with the following error:
Uncaught exception java/lang/NoClassDefFoundError: hello/HelloMIDlet: javax/bluetooth/DiscoveryListener
In the other thread the CLASSPATH was mentioned. So I set in NetBeans under "Tools->Library Manager->Mobile Libraries->J2MEUnit" a new path to the btapi.jar file.
But without success.
I am new to J2ME. I am using a SonyEricsson Z1010 mobile phone. The emulator is "Sony Ericsson J2ME SDK 2.1.4". My IDE is NetBeans 4.0 RC2
Thanks for help
Fritz

SonyEricsson Z1010 doesn't support bluetooth in java applications.

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    Turns out there is a Verizon Bluetooth website: here. The model of Jawbone with which we are having difficulty is not on the list of devices for the Convoy 2. Does this mean it is not compatible? We purchased the Jawbones (JBT03 and JBT04) in August 2009. The specs of these models say they are compatible with bluetooth v2.1 phones, That's the same version of bluetooth used by the Convoy 2. These Jawbones worked fine with the Verizon phones replaced by the Convoy 2. By the way, we tried pairing the Convoy 2 with a recent Motorola headset. Like the Jawbones, the communication between the Motorola headset and the Convoy 2 phone spontaneously switched off/on dozens of times per day.

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