Skip to main content


Writing appealing cross platform mobile applications is challenging. Due to implementation differences in fonts, layout, menus, etc. the same application may look and behave very differently on different devices. In addition much of the advanced UI functionality is not accessible in LCDUI and requires the developer to write very low level "paint" type code. The Lightweight UI Toolkit was developed to address these issues. The Lightweight UI Toolkit makes it very easy to create compelling UI's that will look and behave the same on all devices using a programming paradigm similar to Swing and an advanced GUI builder/theme creation tool. This Toolkit is able to run on CLDC1.1 MIDP2.0/CDC PBP/SE, Blackberry, Java SE and was ported to several other platforms.
To get started, first download the LWUIT Binary from
For further details and guides, go to the LWUIT blog. For support you can go to the LWUIT forum, or to stackoverflow.
LWUIT is free for commercial and non-commercial use and uses the GPLv2 + Classpath exception which allows you to redistribute it with your application. See more LWUIT related videos from Youtube channel.

Getting Started

Key Features

  • LWUIT Designer - Allows creating themes, user interfaces (GUI builder), localization etc.
  • Swing Like MVC (Model View Controller)
  • Layouts
  • PLAF (Pluggable Look And Feel) & Themes
  • Fonts
  • Touch UI - Tensile/tactile drag and touch UI
  • Animations & Transitions
  • Rich widgets
  • 3D Integration (Optional)
  • Painters
  • Modal Dialogs
  • External Tools
  • I18N/L10N
  • Virtual keyboard
  • SVG Integration (Optional)

How to Contribute?

Visit the LWUIT incubator project for more details


Ports And Related Projects

Android & BlackBerry Port by Thorsten Schemm - A native BlackBerry API port of LWUIT is available within the LWUIT incubator project source tree.


LWUIMB - LWUIMB is a port of LWUIT on top of the MicroBackend library. It allows LWUIT to work on top of various graphical libraries (SDL, AWT, SWT, X11, GTK, Qt3/Qt4/Qtopia4, Linux framebuffer) and JVMs (CLDC, CDC, J2SE). The MicroBackend library was created for needs of the MIDPath project.

Screenshots of LWUIMB can be found here .


Java TV/CDC Port of LWUIT is available here .
Please Confirm