How to detect windows startup and appdata folder from java?

Question

To read the startup and appdata path I execute the following registry command and capture the foldername from the output:
reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders" /v Startup
The path contains the windows users name which may contain international character. The inputstream used to capture the path uses the
default encoding of the platform but it seems to get it wrong - international characters looks wrong and any subsequent use of the path
throws FileNotFoundException.
What is the right way to detect theese folders or is there a fix to my current folder detection shown below?
     private static final String RESULT_TOKEN_REGSZ = "REG_SZ";
          String value = null;
          Process process = Runtime.getRuntime().exec(windowsCommand);
          BufferedReader in = new BufferedReader(new InputStreamReader(process
                    .getInputStream()));
          String line = null;
          StringBuilder sb = new StringBuilder(250);
          while ((line = in.readLine()) != null) {
               sb.append(line);
          String capture = sb.toString();
          int pos = capture.indexOf(RESULT_TOKEN_REGSZ);
          if (pos != -1) {
               value = capture.substring(pos + RESULT_TOKEN_REGSZ.length()).trim();
          }

Answer 1

To answer my original post.
I found what I believe is a robust (although somewhat complex if you havent touched C code i more than 10 years like me) method to read the windows registry keys.
I call the following native windows unicode functions using the JNA api:
advapi32.RegOpenKeyExW
advapi32.RegQueryValueExW
Notice the W at the end - those functions encode character strings using wide character encoding UTF-16LE (Little Endian). Now nothing is "lost in translation"...
Wont post the kode here since it spans multiple srcfiles and is rather involved - but there are many good samples on the JNA site.