Locate true path name of virtual drive?

Question

Anybody got an idea to locate the true path of a virtual drive?
i.e. I substituted a particular folder in winnt with q:\
Can i determine which directory q:\ is pointing at? or do I have to run a shell command "subst" and parse the output and determine it?

Answer 1

I wrote the following code quickly.. so please comment on the efficiency matters...
also... what do you think happens if this is running on win9x?
import java.io.File;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.lang.Runtime;
import java.lang.Process;
import java.io.IOException;
import java.util.Vector;
import java.util.StringTokenizer;
class Test
     public static void main(String[] args) throws Exception
runProcess();
private static void runProcess(){
try{
Runtime r = Runtime.getRuntime ();
Process p = r.exec ("subst");
BufferedReader br = new BufferedReader (new InputStreamReader(p.getInputStream()));
Vector out = new Vector();
String s;
while ((s = br.readLine ())!= null)
out.add(s);
String[] output = new String[out.size()];
for (int i = 0; i < output.length; i++)
output[i] = (String)out.elementAt(i);
processSubstOutput(output);
printDrives();
p.destroy ();
br.close ();
} catch (IOException e){
System.out.println (e.getMessage());
public static void processSubstOutput(String[] a){
vds = new VirtualDrive[a.length];
for (int i = 0; i < vds.length; i++)
StringTokenizer strtok = new StringTokenizer(a, "=>");
if (strtok.countTokens() == 2)
String s1 = strtok.nextToken().trim();
String s2 = strtok.nextToken().trim();
vds[i] = new VirtualDrive(s1.substring(0, s1.length()-1), s2);
public static void printDrives(){
if (vds != null)
for (int i = 0; i < vds.length; i++)
System.err.println(vds[i]);
private static VirtualDrive[] vds;
class VirtualDrive
public VirtualDrive(String s1, String s2){
virtualDrive = s1;
mappedDirectory = s2;
public String toString(){
return virtualDrive + " maps " + mappedDirectory;
public String virtualDrive;
public String mappedDirectory;