Thursday Dec 18, 2014
Monday Sep 01, 2014
By MarkHeckler-Oracle on Sep 01, 2014
Creating Our Robot Overlords: Autonomous Drone Development with Java and the Internet of Things [CON1863]
Tuesday, Sep 30, 2:30 PM - 3:30 PM - Hilton - Continental Ballroom 4
Who wants a mindless drone? Teach it to “think,” and it can do so much more. But how do you take it from Toy Story to Terminator? This session’s speakers discuss their new open source library, Autonomous4j, for autonomous drone development. Combining this library and some components from their mad science toolkit, they demonstrate how to get your Internet of Things off the ground and do some real cloud computing. In the session, you’ll learn how to write an autonomous drone program with Java 8; deploy it to the drone’s “positronic brain,” an onboard Raspberry Pi; have the Pi guide an AR.Drone to accomplish a task; monitor it via a JavaFX console; and create your own robot overlord. Demos are included: you’ve been warned!
With Jim Weaver & Sean Phillips
James Gosling recently stated that “being able to debug and profile robots out at sea is a truly life-altering experience.” He uses a set of tools—consisting of editors, debuggers, and profilers—that are part of the NetBeans IDE. In this session, Gosling and other speakers introduce you to these tools and show you how easily and quickly you can program and interact with devices via Java tools. Come see how well integrated embedded devices are with the Java ecosystem.
With Geertjan Wielenga, Jens Deters, José Pereda, & James Gosling
Using NetBeans and the bundled GlassFish application server, the speakers present each new concept with live code and then help attendees complete hands-on exercises.
With David Heffelfinger (and gracious assistance from Sven Reimers, Josh Juneau, Bob Larsen, & Bruno Borges)
Sunday Mar 23, 2014
By MarkHeckler-Oracle on Mar 23, 2014
Every developer is a software user/consumer at various levels, and I'm sure that every one of us has run into a dev tool, library, or component that left us cringing. Why is it so difficult to bend to our will? Why does it seem so broken? WHY DID IT STOP WORKING WITH THE LAST UPDATE???
User-facing software shouldn't break or perform in ways that are "ugly", and if your software is a library/component, neither should your API. Whoever your user is, updates shouldn't break things, and failures (of whatever kind) should be handled gracefully. For example...
If your software doesn't facilitate the user's activity, i.e. make it easier, it is at best sub-optimal and may even be unusable. If your library's API doesn't deprecate and migrate changes clearly and gradually, other developers may find it difficult or impossible to use as well.
User Experience (UX) is about so much more than a User Interface (UI). Whatever you develop should be clean, as intuitive as possible to use, and work in expected ways. Highly self-configurable (to the extent possible) is a huge plus as well. If you are developing a library or custom control, its value can be measured by two things:
- The ease with which it can be applied to and cover "default" applications (simplicity)
- The mechanisms you provide to cover edge cases or "the other 20%" (versatility/extensibility)
These two guidelines apply whether you publish your code as open source or not; after all, the goal of open source software is not to taunt other developers with what could have been and force them to do it themselves.
Keeping these things in mind can help a developer craft better software that is more useful to more people.
Just something that has been on my mind for awhile now...
Have a horror story you'd like to share? Please don't post names - no need for public floggings (!) - but if you have a particularly bad example that you use as a reminder to write better code, please share it in the comments so we can shudder with you. Misery loves company. :)
Monday Nov 18, 2013
By MarkHeckler-Oracle on Nov 18, 2013
I've gotten some excellent follow-on requests, and I've explored several of them. While I may never have the time to implement them all - and some wander FAR from the original goals - some just fit. One of those ideas was for timed dialogs.
What is a Timed Dialog, and When Would I Use It?
Enter the timed dialog. Drawing inspiration from the aforementioned mail notifications and a sample game by colleague Angela Caicedo, I expanded upon Angela's game-switching example to create a (hopefully pleasing) dialog fade in/out effect. Using the number of seconds specified by the developer (you!) via the method setDisplayTime(int displayTime), MonologFX apportions a reasonable percentage of that time to fade in, display, and fade out operations...making user input entirely optional.
What Does it Look Like?
It's much easier to demo than it is to explain, so I created a quick video of a normal dialog, then a timed one, in action. Click here to watch it on YouTube.
Limitations, Caveats, "Keep Off the Grass" Signs
So for the foreseeable future, timed dialogs are really focused upon and should be confined to use as informational dialogs. If you need the application user to make a conscious choice prior to proceeding, keep that dialog prominently displayed until you get a response!
Where Can I Get Them?
I've already pushed the code to my Github repository for MonologFX and the JFXtras-Labs 2.2 and JFXtras-Labs 8.0 repos. And if you just want to download a .jar file and kick the tires, I've put a copy in the MonologFX repo's dist folder. Just download the .zip file, unzip it, and run java -jar MonologFX.jar for a quick demo.
Odds & Ends
I also made a few architectural changes to MonologFX this weekend during our first-ever "Thanks For Sharing Informal, International HackFest", and more will be integrated over time. Please stay tuned for more information. :-)
Friday Aug 30, 2013
By MarkHeckler-Oracle on Aug 30, 2013
This year, I have the privilege of sharing the podium with some of my favorite folks in the world, from around the world! Here are the sessions I'll be taking part in:
Session ID: BOF2605
Session Title: JavaFX, Widgets, and Apps, Oh My! Launching Frameworks for Platforms Large and Small
Venue / Room: Hilton - Plaza A
Date and Time:9/24/13, 18:30 - 19:15
This is a Birds Of a Feather (BOF) session by Hendrik Ebbers, Carl Dea, and me. The best thing about BOFs (for me) is that in addition to allowing us to share what we've been working on, it allows like-minded attendees to fully participate, asking questions, sharing ideas...more like a round table for the whole room to take part in. It's incredibly stimulating, and a lot of learning takes place for all involved.
Session ID: TUT3676
Session Title: Java Embedded Extreme Mashups: Building Self-Powering Sensor Nets for the Internet of Things
Venue / Room: Hotel Nikko - Nikko Ballroom I
Date and Time:9/24/13, 12:30 - 14:30
This is a two-hour tutorial where Jose Pereda and I take attendees through building a self-licking, renewable energy (RE) ice cream cone. Renewable energy systems come in all shapes and sizes, and embedded systems - especially Java-driven ones - are excellent for monitoring those systems. Building remote sensor nets that not only monitor and report system status, but are also powered by those same RE systems, is inexpensive and straightforward once you have the right hardware and know-how. We cover everything from hardware to software, communication and optimization, with solutions that scale well from small personal systems to utility-sized deployments. And we have a good time doing it.
So please, come join us! There's no better place to see what's happening in the world of Java than JavaOne. Hope to see you there!
The Java Jungle addresses topics from mobile to enterprise Java, tech news to techniques, and anything even remotely related. The goal is to help us all do our work better with Java, however we use it.
Your Java Jungle guide is Mark Heckler, an Oracle Senior Java/Middleware/Core Engineer with development experience in numerous environments. Mark's current work pursuits and passions all revolve around Java and leave little time to blog or tweet - but somehow, he finds time to do both anyway.
Mark lives with his very understanding wife & kids in the St. Louis, MO area.
- Point of Clarification: NetBeans, JSF, and MySQL Primary Keys
- How to Create a Positronic Brain for Your Drone
- Join Us at JavaOne 2014!
- Virtual Technology Summit
- Don't Create Brittle Software
- MonologFX Update: Timed JavaFX Dialogs
- Join me at JavaOne 2013
- Virtual Developer Day: Java ME, SE, and EE
- Java EE 7: Get Ready!
- How to "Pretty Up" Your JavaFX TableViews