Windows environment variables

[Shawn]

How do I get and set Windows environment variables from within a Java app.?
For example, if I set "TEMP=C:\TEMP" in the system properties, how do I
retrieve "C:\TEMP"?

[Paul Clapham]

First of all, don't use environment variables to pass information to Java
programs. The Java way to pass small amounts of constant information into a
program is to use a properties file; see the class java.util.Properties.
However, if you need to pass an existing environment variable, you use
the -D parameter on the "java" command, like this in Windows:

java -DTEMP=%TEMP% yourClass

and then in the Java program you get the TEMP system property, like this:

String temp = System.getProperty("TEMP");

PC2

"Shawn" <shawnh@delphiresearch.com> wrote in message
news:3b55f11e$1@news.devx.com...
>
> How do I get and set Windows environment variables from within a Java
app.?
> For example, if I set "TEMP=C:\TEMP" in the system properties, how do I
> retrieve "C:\TEMP"?