Reading /proc/kmsg live

try {
            StringBuilder a=new StringBuilder();
            BufferedReader b=new BufferedReader(new FileReader("/proc/kmsg"));;
            String row;

            while((row=b.readLine())!= null){
                a.append(row+"\n");
            }

            String c=a.toString();


        } catch (FileNotFoundException e) {
            Toast.makeText(this, "FILE NOT FOUND!!!" , Toast.LENGTH_LONG).show();
            e.printStackTrace();
        } catch (IOException e) {