JCVM are the java card operating system?

in some articles I read teh following:
JCVM acts like an operating system. the implementation of JCVM =java card operating system?
in some articles I read: the Java Card Operating system are JCVM, APIs,JCRE, native Methos, and another classes.
help me please. thanks.

The problem can be explained this way.OS and natvie function is the lowest level of the articture,which play the role of os like Windows,JCVM
is higher,its function is platform indepent,JCRE,or javacard Framework,is the platform for the application,Industry Add-on Classes is the interface supplied by others,for instance,the javacard is used as SIM card,the class is the Sim interface,javacard applet is the applet user developed.
Apis play the role of package,for example,Throwable � class,it is the parent class of all the exceptions.

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I would like to know what are the supported Macintosh Operating system versions for IBM SPSS Statistics versions 18, 19 and 20?
Answer
Please see the list below:
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• 18.0 can be troublesome
• an updated version of 18.x should be better.
Related files
PASWStatistics_1 803_Mac_Patch.dmg and IBM SPSS Statistics 18.0.3.4 Hotfix Mac.zip are no longer available from the spss.com domain, and I could not find them in an IBM domain. If you download from unofficial sources, proceed with caution.
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In Apple Support Communities:
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Diference between Java Card Operating System and java card?

operating system is inside the ROM, but are the JCVM, APIs and JCRE inside this ROM too?

Even if you found it, how are you going to get the cards ? How will you get the tools to put the JCRE/JCVM into ROM and start it ? What about the card OS and native methods ? How are you going to engineer that ?
The cost of all that outweights the benefits of just purchasing the cards already loaded !
Just my 2 cents

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regards
shyamAnd specifically, the getProperty() method.
- K

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1.agree
Virtual Machine Specification for the Java Card� Platform, Version 2.2.1 chapter 2.2.2.1:
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That means the Java Card platform also have two type package,named package and unnamed package.
2.against
Development Kit User�s Guide for the Java Card Platform, Version 2.2.1 chapter Running the Converter:
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< minor_version>"
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I have been botherd by the above 3 boresome and opposite points for some time and cannot give out the key of the question.
Can some one give me some ideas?
thx!

Sun's kit is free. There is a reference implementation of the JC Runtime environment with the kit.
You of course can't load that onto a card. And even if you had the RE, you won't be able to load onto a card because the RE is burned into the ROM which you don't have low level access to.
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Java Card File System ...Please reply

Hi all ,
I am working on Java Card technology for last one year . Presently I am facing some problem regarding some file concept of java card .
I know that Java Card 2.1 does not support file system . But I want to simulate the file system in java card using applets . i.e . I want to write an application(applet) , which can simulate the EF , DF in smart card . Whenever APDU command is send to the file system applet , it should generate a Elementary file (EF) or dedicated file (DF) etc and store data to that file.
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regards
Dibyendu .
you can contact me to this email
[email protected]

dear duran ,
You have written that
"Follow the guidelines for the different supported filesystems on the JC"
But after Java Card version 2.0 , it does not support file system . I am using Java Card 2.1 .
Could please some sample code to my mail Id , so that I can take a look at it .
My mail id is : [email protected]
Please share the idea , as I am really need some help.
Regards ,
Dibyendu.

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JCVM are the java card operating system?

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