Welcome to
the September/October 2016 issue of Java Magazine, in which we look at how
to program devices and develop for the Internet of Things (IoT). Devices tend
to have intensely individual programming requirements, and what works on one
device might not work at all on another, so we chose to stagger the levels of
information in these articles. The first
article, by Gastón Hillar, shows the minutiae of setting up a small
Intel-based board, how to send it code, and how to monitor the sensors. If
you're new to programming devices, this is the place to start.
The second
article, by Stephen Chin, shows how much of the work of controlling devices
consists of sending commands and extracting operational data. While the
commands and data vary widely by device type, it's likely that as the IoT
continues to gain traction, formal standards for both the data and the commands
will become established and device programming will be less of a highly
customized task.
The final
article on this theme demonstrates the key enabling technology for the IoT:
the cloud. It's expected that the way most devices will share their data with
consumers is via the cloud. As this article shows, IoT-friendly clouds offer
ways to take in custom data and issue commands when data attains specific
thresholds. That data typically is aggregated into cloud-based dashboards from
which technicians and mangers control large processes and activities.
Beyond
devices and IoT, we have our usual coverage of other Java technologies,
including JAX-RS
2.1, the updated standard for consuming web services. You'll also find an explanation
of Fantom, a little-known JVM language that compiles to the JVM and to
JavaScript. Plus we offer a lengthy tutorial
on interfaces, and, of course, our famous
quiz.
Remember
that you can read the issue online.
Or, if you prefer, you can download it in PDF format. For the download, access
the magazine from a laptop or desktop and you'll see the download icon on the
right. You'll also note that you can now access back issues of Java Magazine
from this year and last year. Fuente: Java Magazine
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