Pls Help - How can I read the info in system setting

I was trying to get the user login information to auto authenticate a session. The information is in system environment setting. ie say JAVA_HOME when you type SET in the command prompt in w2k.
Is it possible for a JSP code to read that info? Thank you.

I have tried using the following in a jsp file:
<%@ page import="java.io.*"%>
<%@ page import="java.lang.*" %>
<%
Runtime c = Runtime.getRuntime();
Process p = c.exec("SET");
BufferedReader br = new BufferedReader (new InputStreamReader (p.getInputStream()));
%>
Somehow, I got this error. Any idea how I could fix it. Thanks.
---- root cause ----
java.io.IOException: CreateProcess: SET error=2
     at java.lang.Win32Process.create(Native Method)
     at java.lang.Win32Process.(Win32Process.java:61)
     at java.lang.Runtime.execInternal(Native Method)
     at java.lang.Runtime.exec(Runtime.java:546)
     at java.lang.Runtime.exec(Runtime.java:413)
     at java.lang.Runtime.exec(Runtime.java:356)
     at java.lang.Runtime.exec(Runtime.java:320)
     at org.apache.jsp.env1_jsp._jspService(env1_jsp.java:49)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)

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Date: Thu, 20 Dec 2012 03:13:17 -0700
From: [email protected]
To: [email protected]
Subject: Pls help - How can I add a typekit font to muse?
    Re: Pls help - How can I add a typekit font to muse?
    created by morgan_in_london in Help with using Adobe Muse - View the full discussion
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Pls Help - How can I read the info in system setting

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