File 2

import java.io.BufferedReader;

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.Scanner;

public class File extends Thread {

    ArrayList<String> example;
    String name;

    File(String name) {
        this.name = name;
        this.example = new ArrayList<String>();
        this.setDaemon(true);
    }

    public static ArrayList<String> readFile(String name) throws FileNotFoundException {
        Scanner scanner = null;
        scanner = new Scanner(new BufferedReader(new FileReader(name)));
        ArrayList<String> fileList = new ArrayList<String>();
        while (scanner.hasNextLine()) {
            fileList.add(scanner.nextLine());
        }
        scanner.close();
        return fileList;
    }

    public static void finishTracking () {

    }


    public void observeFiles() throws FileNotFoundException, InterruptedException {
        ArrayList<String> baseFile;
        ArrayList<String> observableFile;
        boolean b = true;
        while (b) {
            baseFile = File.readFile(name);
            Thread.sleep(5000);
            observableFile = File.readFile(name);
            if (!baseFile.equals(observableFile)) {
                System.out.println("There are a mistake");
            } else {
                System.out.println("There are no changes in the file " + name);
            }
            baseFile.clear();
            baseFile.addAll(observableFile);
        }
    }

        public void run() {
        try {
            this.observeFiles();
        } catch (FileNotFoundException ex) {
            System.out.print("There are no files with such name!");
            return;
        } catch (InterruptedException ex) {
            System.out.print("Tracking has been stopped");
            return;
        }
    }


}


import java.util.Scanner;
import test.Menu;
import test.MenuEntry;
import java.util.InputMismatchException;

public class Test2 {
    public static void main(String[] args) {

        Menu menu = new Menu();

        Scanner sc = new Scanner(System.in);


        menu.addEntry(new MenuEntry("Start tracking file") {
            @Override
            public void run() {
        System.out.print("Enter the file name" + "\n");
        String entry = sc.nextLine();
        File file = new File(entry);
        file.setName(entry);
        file.start();
            }
        });

        menu.addEntry(new MenuEntry("Stop tracking file") {
            @Override
            public void run() {
                System.out.println("Enter the number: 1.Stop" + "2.Cancel and return" + "\n");
                boolean b = true;
                while (b) {
                    try {
                        int input = sc.nextInt();
                        switch (input) {
                        case 1:

                        return;
                        case 2:
                            return;
                        default:
                            System.out.print("Wrong input!" + "\n");
                            break;
                        }
                    } catch (InputMismatchException ex) {
                        System.out.print("Wrong input!");

                    }
                }
            }
        });

     menu.addEntry(new MenuEntry("Send e-mail") {
        @Override public void run() {
            System.out.println( "Enter adress");
            String adress = sc.nextLine();
            MailSender mailsender = new MailSender ();
            mailsender.setProperties();
            mailsender.sendMessage(adress);
        }
         });


        menu.run();

    }
}