IS2T demonstrates that an embedded Java application can run on a $5 microcontroller using the MicroEJ embedded platform. The platform can be configured to fit with any kind of hardware system, from low-end MCUs to high-end MPUs. An example of embedded application is developed here with the MicroEJ SDK on an ARM Cortex-M4 microcontroller. The graphical interface uses the MicroEJ graphical library and the standard widget-based framework. The application requires only 512KB of code, including 280KB of graphical resources.