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Version 1.5 of the Lightweight UI Toolkit (LWUIT) is out!

This is the culmination of more than a year of diligent work by the LWUIT team and valuable input and feedback from the LWUIT developer community.

The result is a major revamp of the GUI Builder, and a significantly improved LWUIT toolkit with new functionality, changes, and enhancements to in many areas:

  • GUI Builder with major revamp of the Resource Editor tool
  • LWUIT4IO a tightly integrated Storage, Networking & Filesystem framework with ports to multiple platforms
  • Far deeper theming including, theme constants, declarative style inheritance, disabled styles etc.
  • New JavaSE & CDC ports allowing easier debugging/testing/profiling on the desktop as well as easier demos by deploying LWUIT applications as applets
  • New Components:
    • ContainerList allows variable row size list & complex list layouts
    • Tabs supersedes the TabbedPane providing swipe gestures, elaborate theming and much more
    • Slider provides progress indication and gauge control
  • New recommended project structure for demos allowing for easier porting to RIM/Desktop/CDC
  • PeerComponent allowing the embedding of native components within a LWUIT UI (applicable on some platforms)
  • Improved & simplified animations for layout effects
  • Multi-Images and improved SVG support
  • HTML 4 tag support and public parser API for HTML/XML
  • Virtual Keyboard is now built into LWUIT with deep support for native VKB input and toggling between multiple VKB’s
  • Focus rewritten from scratch to be more intuitive
  • Performance/RAM improvements
  • Drag & Drop API, copy and paste API and much more

For more information, see the LWUIT blog and listen to the interview with Chen Fishbein, one of the core LWUIT developers, on The Java Spotlight Podcast episode #42.

While you’re here, you should also check out the “Beyond Smartphones” open source project. While not using all of the latest LWUIT 1.5 features just yet it is a cool, social networking app that showcases the ease of building engaging applications using LWUIT. Released under BSD you can use it as a starting point for your own LWUIT application.

Do it with LWUIT!


— Terrence



  • 5/15/2011: Added link to previous blog on Twitter API ME and a How-To (see below)

Smartphones get a lot of attention these days, but feature phones running Java ME outsell smartphones by a 5x-10x margin and have an installed based measured in the billions, not millions.

So, as an application developer or ISV, if you are going for the big markets, Java ME really needs to be part of your platform story. Not only does Java ME provide the big numbers, but Java ME also has all the tools and features to make creating great applications easy – applications that look and feel like smartphone-class applications.

Ok, so, let’s say you want to create one of those cool, new-fangled social networking-/location-based/interactive mash-up applications … Where do you start?

A while ago, I created a presentation and a sample application on just that topic. I presented it first at JavaOne 2010 in San Francisco as session S314178: “Beyond Smartphones: Rich Applications and Services for the Mobile Masses” and you can find the presentation by searching at the JavaOne content catalog.

video-shot.pngI’ve been continuously updating it since, and have now released the source code under the BSD license on The “Meet Me For Dinner” sample application and project shows the core building blocks and development aspects of creating rich and compelling applications and content for Java ME platforms.

The sample app is not perfect (still has a few minor bugs and is lacking some nice-to-have features) but the goal is to show interested developers how to get started and enables them, due to the liberal BSD license, to copy-and-paste code as a starting point for their own projects.

Check out this short video for an introduction. Then go the “Beyond Smartphones” project on for the full sources, instructions on how to build and run the code, and a forum for questions. Also, see my previous post on the Twitter API ME for more information and a “How-To”.

Finally, if you’re planning to attend JavaOne in Hyderabad, India next week (May 10-11), be sure to attend the “Beyond Smartphones” session scheduled for Wednesday, May 11, at 3:45 pm.


— Terrence

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