I am trying to get the output of android shell command 'getprop' with java since getprop() always returns null no matter what.

I tried this from developer.android.com:

        Process process = null;
    try {
        process = new ProcessBuilder()
           .command("/system/bin/getprop", "build.version")
           .redirectErrorStream(true)
           .start();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

     InputStream in = process.getInputStream();

     //String prop = in.toString();
     System.out.println(in);

     process.destroy();

However what is printed is not the output but a bunch of characters and numbers (dont have the exact output right now).

How can i get the output of the process?

Thanks!