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:

LeJOS RCX

Provides replacement firmware allowing users to run a Java environment on the RCX brick.

LeJOS NXJ

In 2006 LeJOS was ported to support the NXT bricks, adding the enhanced features of the NXT to the language.

LeJOS EV3

In 2013 LeJOS was ported to support the current EV3 release of Mindstorms.

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