Scratch

It's probably quite possible to make a "toy" OS like the ones often made in Scratch, with actual file managing. But it'd be pretty complicated still, and not worth it considering the high-level-ness of the Java VM (i.e. interfacing with hardware would be hard, and you'd end up relying a lot in external libraries).

Erm… a large portion of Android OS is written in Java. So yes. However, writing an operating system is not a small project.

Last edited by nXIII (2013-01-17 16:26:28)

Android merely converts Java bytecodes to another kind of bytecode, designed to run efficiently on mobiles, in the Dalvik VM. Thus, only Android applications can be written in Java, while the OS and the kernel are in the device's native code.

nXIII wrote:

technoguyx wrote:

Android merely converts Java bytecodes to another kind of bytecode, designed to run efficiently on mobiles, in the Dalvik VM. Thus, only Android applications can be written in Java, while the OS and the kernel are in the device's native code.

I said "a large portion," i.e., a large portion of the system applications as well as almost all the installable applications and some other stuff. I didn't say it was entirely written in Java, as it's not.

Basically it is not running on java, but, its Launcher and apps are written in java.

theprogrammerpro wrote:

Just out of curiosity is it possible to code an Operating system in java

I have read operating system full theory.  So In the theory about operating system, Yes I said, but you will still have to have some low-level set up code to bootstrap the Java VM that will run on it, and also low-level code for obtaining hardware drivers.