Changing the System.getProperty("os.name") value

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ktdreyer@gmail.com - 19 Jan 2006 23:01 GMT

Hi,

I have a question about running a particular applet within my browser.

If this applet calls System.getProperty("os.name"), the JVM will return
the proper OS. Is there any way to change what value this function
returns? I'd like to return a value that imitates Linux or Mac OS. I'm
using Windows, so is there a registry key or configuration file I can
change?

Thanks
- Ken

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IchBin - 19 Jan 2006 23:30 GMT

> Hi,
>
[quoted text clipped - 8 lines]
> Thanks
> - Ken

Yes you can..

System.setProperty("os.name", "Windows XP") ;

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Thanks in Advance...
IchBin, Pocono Lake, Pa, USA
http://weconsultants.servebeer.com/JHackerAppManager
__________________________________________________________________________

'If there is one, Knowledge is the "Fountain of Youth"'
-William E. Taylor, Regular Guy (1952-)

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ktdreyer@gmail.com - 21 Jan 2006 21:57 GMT

Thank you, but this is not my applet and I do not have access to the
source code. Is there another way to accomplish this?

- Ken

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Roedy Green - 21 Jan 2006 23:01 GMT

>Thank you, but this is not my applet and I do not have access to the
>source code. Is there another way to accomplish this?

You can decompile it, fiddle it, and recompile it. It may take some
adjusting. You might need to hire someone to do the patch.

http://mindprod.com/decompiler.html

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Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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Simon - 03 Feb 2006 15:23 GMT

ktdreyer@gmail.com schrieb:

> Thank you, but this is not my applet and I do not have access to the
> source code. Is there another way to accomplish this?
>
> - Ken

You can extend the applet's main class, override init() to make the call to
System.setProperty(), and possibly add the new class to the applet's jar.

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Roedy Green - 03 Feb 2006 15:48 GMT

>> Thank you, but this is not my applet and I do not have access to the
>> source code. Is there another way to accomplish this?

You can always disassemble or decompile them. The code is remarkably
like the original.
See http://mindprod.com/jgloss/decompiler.html

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Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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Roedy Green - 06 Feb 2006 00:20 GMT

>You can extend the applet's main class, override init() to make the call to
>System.setProperty(), and possibly add the new class to the applet's jar.

And I hope it goes without saying , calls super.init().

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Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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Thomas Hawtin - 04 Feb 2006 09:53 GMT

> Thank you, but this is not my applet and I do not have access to the
> source code. Is there another way to accomplish this?

If you run it in the appletviewer, then you can use:

-J-Dos.name="Mac OS"

Note, all the other properties will remain the same, as will various
implementations. It wont start looking like Aqua.

Tom Hawtin

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Unemployed English Java programmer
http://jroller.com/page/tackline/

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Changing the System.getProperty("os.name") value

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