Java as operating system

[aneesholv]

Is Java can used as operating system in any devices ?

 

[ckshivaram]

java is only a software platform which can be used on most of the OS.. it cannot be run as dedicated OS......

Let us see if any one has different answer...

 

[navenmou]

Please once check below site...
JavaOS - Wikipedia, the free encyclopedia

 

[ckshivaram]

hi naveen, in that he gives a statement

Sun now officially considers JavaOS a legacy system and recommends migration to Java ME.[1] This by itself however is not a full replacement, as Java ME is an API specification, which runs on top of an operating system, and is not an operating system in itself.

please check it and confirm...

 

[navenmou]

Yes sir....In most of the cases java is used only designing OS..But java itself is not an OS.....

In ARM architecture there is one concept Jazelle technology...Is it related to Java...Please explain about this...

 

[ckshivaram]

if you look at the nomenclature of ARM family
it is ARM XYZ TDMI EJF-S

J stands for Jazelle architecture or java byte code support.. Not all the ARM family support it.. few support it..
this means that the family of ARM which supports this have inbuilt opcodes for identifying the java instruction.. this enables the programmer to write jave program and then burn it into the controller and execute the java program... in normal ARM7 like lpc 2129 etc,, this support is not there.. they dont support java instruction set and architecture...

Hope this is clear...

 

[navenmou]

ok sir...now its clear.....