Good morning:

I'm trying to run an external application that needs to be executed as root. I have to read the lines from exit after the execution of this application but it says "permission denied", as if the its not been done correctly. I've been thinking over a time and I can not move forward. The code is as follows:

process = Runtime.getRuntime().exec("su");
String[] command = {external application command};
process = Runtime.getRuntime().exec(comando);
InputStream inputStream = process.getInputStream();
BufferedReader bufferedReader = null;
try
{
   bufferedReader = new BufferedReader(new
       InputStreamReader(inputStream),8192);
   String line = null;
   while ((line = bufferedReader.readLine()) != null)
   {
      System.out.println("read line:"+line );
   }
}
catch (IOException ioe)
{
  ioe.printStackTrace();
}
process.waitFor();

Does anyone know why not let me run the command?

Thanks.