public static String getKernelVersion() {   String kernelVersion = "";   InputStream inputStream = null;   try {     inputStream = new FileInputStream("/proc/version");   } catch (FileNotFoundException e) {     e.printStackTrace();     return kernelVersion;   }   BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream), 8 * 1024);   String info = "";   String line = "";   try {     while ((line = bufferedReader.readLine()) != null) {       info += line;     }   } catch (IOException e) {     e.printStackTrace();   } finally {     try {       bufferedReader.close();       inputStream.close();     } catch (IOException e) {       e.printStackTrace();     }   }    try {     if (info != "") {       final String keyword = "version ";       int index = info.indexOf(keyword);       line = info.substring(index + keyword.length());       index = line.indexOf(" ");       kernelVersion = line.substring(0, index);     }   } catch (IndexOutOfBoundsException e) {     e.printStackTrace();   }    return kernelVersion; }