JavaOS is an operating system with a Java virtual machine as a fundamental component. It is developed by Sun. As Unix or Unix-like systems are primarily written in the C programming language, JavaOS is primarily written in the Java programming language.
The system is based on a hardware architecture native microkernel.
Platforms that the kernel runs on include
The Java virtual machine runs on the microkernel.
All device drivers are written in Java and executed by the virtual machine.
A graphics and windowing system, implementing the AWT API is also written in Java.
JavaOS was designed to run on embedded systems and has applications in devices such as set top boxes, networking infastructure and ATMs.