Raspberry Pi is a powerful and inexpensive embedded computing platform that has great community support. It is powerful enough to run a full Linux operating system, comes with Java SE pre-installed, and has digital input/output ports that you can use to interact with LEDs, buttons, sensors, and motors.

You can use Java on any of the Raspberry Pi models from the original Model B through the latest Model 3. Here is a list of all the different Raspberry Pi models and their capabilities:

MODEL

PROCESSOR

MEMORY

GPIO

USB

Raspberry Pi B 700Mhz 1 Core 256/512MB 28 2

The Raspberry Pi 2 features a faster processor with exactly the same price point as the original Raspberry Pi B at 35 USD. One of the very latest models, the Raspberry Pi Zero, has an even more compact design than the Model A while keeping all the core features including a host USB port, HDMI display output, and 40 GPIO pins. And all of these boards support running Java right out of the box from the Raspbian distribution that the Raspberry Pi Foundation supports.