Bluetooth also supports connections between piconets: When a master on one piconet becomes a slave on another, it provides a bridge between them. When Bluetooth devices connect to each other, they form a piconet, a dynamically created network that comprises a master device and up to seven slave devices. Backgroundĭeveloped by the Bluetooth Interest Group, Bluetooth technology consists of:īluetooth radio technology is based on the 2.45 GHz Industrial, Scientific, and Medical (ISM) frequency band, which is unlicensed and globally available. This article will cover in detail only the more prevalent of the two, the core Bluetooth package javax.bluetooth, leaving the OBEX API, javax.obex, for later discussion. JSR 82 actually specifies two independent optional packages: the core Bluetooth APIs and the Object Exchange (OBEX) APIs. Finally we'll look at some code that shows how to use these APIs. In this article I'll present some background about Bluetooth, give you an overview of the typical elements of a Bluetooth-enabled MIDlet application, and introduce you to the core Java Bluetooth APIs. To support development of Bluetooth-enabled software on the Java platform, the Java Community Process (JCP) has defined JSR 82, the Java APIs for Bluetooth Wireless Technology (JABWT). Each PAN is a dynamically created network built around an individual, that enables devices such as cellular phones and personal digital assistants (PDAs) to connect automatically and share data immediately. Bluetooth is a low-cost, short-range wireless technology that has become popular among those who want to create personal area networks (PANs).
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