Dr. Dobb's Journal - July 2008 - (Page 53)

Java and the Nokia N810: A Rich Mobile Platform Although Nokia doesn’t officially support Java development on the N810, it can easily be done. With help from the Jalimo project (jalimo.org), which offers a free Java stack specifically for mobile Linux devices, you can run just about any Java SE 5 application available on this device so long as it fits into its memory and storage profile. It also supports Eclipse SWT to help you build rich GUI applications. To install Java (technically, the Cacao VM with GNU Classpath), you can use the N810’s built-in Application Manager tool. This makes it easy to install, update, or uninstall any Debian-packaged Linux application that is compatible with the N810. To manually configure Application Manager for Jalimo, choose the Application Catalog under the Tools menu and add or create a new catalog with these parameters: • Catalog name: Jalimo • Web Address: jalimo.evolvis.org/repository/maemo • Distribution: chinook • Component: user You can install packages that it suggests at that point; remember to include both “jalimo-console-example” and “jalimo-swt-example,” because these pull in the needed files to run both commandline and GUI applications, along with the libswt-gtk-3.4-java graphics toolkit. The Cacao VM gets installed in /etc/alternatives, with a link created in /usr/bin so that it’s in the path. By default, libraries get installed in /usr/share/java, with configuration files in /usr/share/javaconfig. To do real Java development for your N810, connect it to a host computer running Windows, Linux, Solaris, or Mac OS X, and develop with an IDE such as Eclipse or NetBeans. Here, I focus on Eclipse because the Jalimo VM comes with Eclipse SWT support. You can connect the N810 to the host with USB cable. Once connected, the device’s internal storage is displayed as an external disk that can be used to transfer files. To do real Java development for your N810, connect it to a host computer running Windows, Linux, Solaris, or Mac OS X, and develop with an IDE such as Eclipse or NetBeans PC in adv c The the er on lo his tise tinu nge tor d so ou st y o ftw sly f . ar .. et ma oo nk l ind . -lint 8.0 for C/C++ Presents Bug of the Month #504 #include #define Hot_Dog 1 #define Potato_Salad 2 #define Green_Salad 4 #define Hummus_Sandwich 8 unsigned Grand_Menu = 0x70E; unsigned select(int v) // v means vegetarian { return (Grand_Menu >> !v ? 8 : 0) & 0xFF; } int main() { printf( "%x\n", select(0) ); } Will is preparing a 4th of July barbeque and is employing his new found programming skills to help prepare the menu. However, the value printed indicates that the meat eaters will be served a hummus sandwich. What's going on?Visit our web site at www.gimpel.com PC-lint for C/C++ will catch this and many other bugs. It will analyze a mixed suite of C and C++ modules to uncover bugs, glitches, quirks and inconsistencies. Not your Grandpa’s lint: PC-lint has introduced several spectacular and revolutionary innovations in the art of static program analysis. Taking clues from initializers, assignments, and conditionals, variable and member values are tracked, enabling reports on potential uses of null pointers and out-of-bounds subscripts. New with Version 8: Interfunction value tracking – Actual argument values are used to initialize parameters; return values are computed; a multipass operation (you control the number of passes) allows you to plumb the depths of function behavior to arbitrary levels. Plus Our Traditional C/C++ Warnings: Uninitialized variables, inherited non-virtual destructors, strong type mismatches,ill-formed macros, inadvertent name-hiding, suspicious expressions, etc., etc. Full Language Support for ANSI/ISO C and C++. PC-lint for C/C++ Numerous compilers/ libraries supported. Runs on Windows, MS-DOS, and OS/2. $239 FlexeLint for C/C++ The same great product for other operating systems. Runs on all UNIX systems, VMS, mainframes, etc. Distributed in shrouded C source form. Call for pricing. 30 Day Money Back Guarantee Gimpel Software Serving the C/C++ Community for 22 Years. CALL TODAY (610) 584-4261 Or FAX (610) 584-4266 www.gimpel.com PC-lint and FlexeLint are trademarks of Gimpel Software July 2008 l www.ddj.com l Dr. Dobb’s Journal 53 http://jalimo.org http://www.gimpel.com http://www.gimpel.com http://www.gimpel.com http://www.ddj.com

Table of Contents Feed for the Digital Edition of Dr. Dobb's Journal - July 2008

Dr. Dobb's Journal - July 2008 Contents Friday Night Fish Fry Alia Vox Developer Diaries Developer’s Notebook Engineers Without Borders Conversations Patricia Tries Event-Based Architectures Graphs Versus Objects Lock-Free Queues Dr. Dobb’s Architecture & Design World Java and the Nokia N10 Internet Tablet Effective Concurrency The Agile Edge Swaine’s Flames

Dr. Dobb's Journal - July 2008

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