how to provide Windows env variable values in vm arguments?

Question

i want to set a jvm variable with any of the Windows environment variables, say suppose WINDIR. ie is there way i can set as -Dwindir=WINDIR where the windir will have the value of WINDIR.

EDIT: when tried with -Dwindir=WINDIR it is directly assigning a string value of "WINDIR" which i am not interested in.

Thanks.

AlexR · Accepted Answer · 2011-08-24 10:11:57Z

2

First if you want to pass environment variable to JVM on windows use % sign: -Dwinddir=%WINDIR%. This is not java. This is DOS.

Second, you do not need it in most cases. Use System.getenv() instead. Probably it contains all you need.

answered Aug 24, 2011 at 10:11

AlexR

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Charles Keepax · Accepted Answer · 2011-08-24 10:10:38Z

1

Enclosing the environment variable in percent signs should do it:

-Dwindir=%WINDIR%

answered Aug 24, 2011 at 10:10

Charles Keepax

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3 Comments

Ingo Over a year ago

Care to tell HOW it didn't work? Or should we ask our crystal ball?

GuruKulki Over a year ago

i had given in vm arguments like -Dwindir=%WINDIR% and using the variable windir in the logj.properties to name the file. its creating a file with the name %WINDIR%.

Charles Keepax Over a year ago

In that case I suspect you will find that WINDIR is not defined as an environment variable.

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