try {
        Scanner input = new Scanner(System.in);
        System.out.print("Enter the file name with extention : ");
        File file = new File(input.nextLine());

        input = new Scanner(file);


        while (input.hasNextLine()) {
            String line = input.nextLine();
            System.out.println(line);
        }
        input.close();

    } catch (Exception ex) {
        ex.printStackTrace();
    }
}