Monday Dec 21, 2009

Screencast: Device Selector

Some time ago I asked you how are you familiar with Device Selector. I'd like to thank everybody who answered the question. We have got lots of interesting information. More than half of participants answered "I don't know what Device Selector is." I didn't expect so high percentage of votes for this option so this is a good chance to say a few words about Device Selector functionality.

Device Selector is a small window in the bottom left corner of Java ME SDK development environment. In general you can use it to set emulator properties or simply run project on different emulators. This screencast shows you Device Selector in action.

Monday Oct 26, 2009

Preverify: VERIFIER ERROR

If you are running Java ME SDK 3.0 Early Access for Mac OS X you might experience preverify problem and got VERIFIER ERROR message. To fix it run following command in /Applications/Java_ME_SDK_3.0.app/Contents/Resources/bin path:

lipo preverify -output preverify -extract i386

It leaves only 32-bit version in the preverify file and takes out the 64-bit version.

Wednesday Oct 21, 2009

Early Access for Mac OS X is ready

Mac developers have often asked when Java ME SDK 3.0 will be available for their operating system. We always answered that we were working on it. Today is the day when it happened, we have released Java ME SDK 3.0 Early Access for Mac OS X. You can download it from http://java.sun.com/javame/downloads/sdk30.jsp.

Highlights of  Java ME SDK 3.0 Early Access, Mac OS X:

  • Bringing functionality of the famous Wireless Toolkit to Mac developers
  • Unique architecture enabling work with the real device from ME SDK 3.0 now running on Mac OS. Communication with the devices, application deployment and even On-Device debugging over the Wi-Fi.
  • Support for the latest CLDC Hot Spot VM and Java Micro Edition APIs
  • High End Tools for optimizations: Profiler, Network Monitor, Support for Debugging, Wireless Messaging Console and many more
  • Introducing JavaFX 1.2.1 Mobile emulator running on Mac OS
  • Integrated Device Search Database for easy reference
  • Powerful Autoupdate for additional plug-ins and product updates
  • Development Environment based on NetBeans Platform 

Monday Aug 24, 2009

What's going on with Mac version?

That's a question we have got a lot of times. It was answered here and in different forums, describing why it take some time to release Mac version so I'm not going to write the reasons again. Today I'm going to show you something behind the scene. We are running Scrum process while developing Java ME SDK. Next two pictures were taken at the end of our latest sprint.

The first pictures shows our office board with table of stories and their tasks. As you can see we finished all tasks.

Taskboard

The second picture is more interesting. It shows burndown chart, which is a is graphical representation of work left to do versus time. The green line represents the ideal burndown. You can see that our progress was under the ideal line. It means that we worked faster and finished our tasks sooner than we expected when planning the sprint. Especially in the beginning the progress was quite rapid so in the middle of the sprint we added a few extra stories and we achieved all of them.

Burn down chart

That's what is happening in our team and hopefully answers the title question. Java ME SDK for Mac is in progress and it goes well ... stay tuned – coming soon to a computer near you!

Sunday May 24, 2009

VisualVM understands Java ME Profiler Snapshot

Java ME SDK 3.0 supports offline profiling. Data is collected during the emulation session. After you close the emulator a profiler data snapshot is written to a .prof file which you can load and view in the SDK.

Since last Friday it is possible to load and view Java ME SDK profiler file also in VisualVM 1.1. VisualVM is a tool to monitor and troubleshoot Java applications. For more information about VisualVM visit its homepage.

How to view Java ME SDK profiler file in VisualVM? It's easy. Everything you have to do is to install Java ME Profiler Snapshot Viewer module from VisualVM update center.

  1. Start VisualVM.
  2. Open Plugins manager from Tools->Plugins menu.

    Tools->Plugins menu

  3. In Available Plugins tab select Java ME Profiler Snapshot Viewer and click Install button.

    VisualVM Update Center


When the module is installed, new action Import Java ME SDK Snapshot... is added to the application File menu.

Import Java ME SDK Snapshot...

Java ME SDK profiler file can be opened and shown in VisualVM by this action. Default location of Java ME SDK profiler file is <user_home>/javame-sdk/3.0/work/<device_number>/data.prof.

Thursday Apr 23, 2009

Blu-ray Disc Application Development with Java ME

Java ME SDK 3.0 integrates CLDC, CDC and Blu-ray Disc Java (BD-J) technology into one SDK. BD-J is a new member of Java ME SDK family ... so it is the right time to try it and create your first Blu-ray Disc Application. How to do it? It's easy, just follow this tutorial.
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Java ME Platform SDK is a toolbox for developing mobile applications. Java ME SDK Download

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