Just receiving J2ME, learn to write Bluetooth applications, want to write a mobile phone and PC through Bluetooth communication, and I think it should be not difficult. Searching online on the Internet, it is found that there are few very few, even the basic entry information is not, dizzy. After a few days, I have a little clue, maybe I am stupid, I have had the result of a little bit for so long, I have to write my own blog, and published the passage of how to establish a Bluetooth development platform. I have found a lot of relevant information online, I didn't find it. Looking at the website of Bluetooth China, he said to be familiar with the agreement first, then write from the bottom HCI, say good. With its SDK, the results found that it is not interesting, I don't know how to apply. I have seen a lot of information or I don't know the so-called. Oh, sleep. Wake up in the morning, still thinking about how Bluetooth development should start, not willing. Finally found a point of information, develop application software, just a USB adapter and SDK can be. OK, the USB adapter is available, find a SDK. Halo, the original SDK is to buy, the price is not fed, and once again. Only looking for a free SDK, set up a Demo version of the Demo version of Bluetooth in China again, or feel that it is not easy to apply, search again on Google, at http://www.mecel.se/products/bluetooth/ Default.htm saw a trial version of development tool, registration, download, installation, open, built a BT project, huh, huh, very good. Watch, haha, found a new mainland, the function is very good. There is also more features I haven't found it yet, I want to be enough for beginners, staying with you to study.