Android : Execute shell command "java -jar" through android app

I have write the following code and i want to know if it's possible to execute the command i have wrote in exec();

StringBuffer output = new StringBuffer();
      Process p;
      try {
        p = Runtime.getRuntime().exec("java -jar /mnt/sdcard/magnum/Run.jar /mnt/sdcard/magnum/Training.arff /mnt/sdcard/magnum/Training.arff /mnt/sdcard/magnum/classifier /mnt/sdcard/magnum/predictions.txt");
        p.waitFor();
        BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
              String line = "";
        while ((line = reader.readLine())!= null) {
          output.append(line + "\n");
        }
      } catch (Exception e) {
        e.printStackTrace();
      }
          String response = output.toString();
     Toast.makeText(this, response, Toast.LENGTH_LONG).show();

I want know if i can execute this command:

java -jar /mnt/sdcard/magnum/Run.jar /mnt/sdcard/magnum/Training.arff /mnt/sdcard/magnum/Training.arff /mnt/sdcard/magnum/classifier /mnt/sdcard/magnum/predictions.txt

The Run.jar takes as input two files and output the results to predictions.txt. But i want to know if the java -jar can be run like this way. Thank you in advance.