A Java Virtual Machine that can run on Mindstorms intelligent bricks.
LeJOS currently has three flavours, each one suitable for a different version of the Mindstorms Intelligent Brick:
Provides replacement firmware allowing users to run a Java environment on the RCX brick.
In 2006 LeJOS was ported to support the NXT bricks, adding the enhanced features of the NXT to the language.
In 2013 LeJOS was ported to support the current EV3 release of Mindstorms.