src/CounterApp.java - master - teuwers/counter

src/CounterApp.java
70 строк2 KB
Mikhail Chernobrov
Logical edits
07 мар 2025, 00:30
07 мар 2025, 00:3021e155d
import java.io.*;
import java.util.Scanner;

public class CounterApp {
    private static final String FILENAME = "counter.ser";
    private Counter counter;

    CounterApp() throws IOException, ClassNotFoundException {
        try {
            FileInputStream fileInputStream = new FileInputStream(FILENAME);
            ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream);

            this.counter = (Counter) objectInputStream.readObject();
            objectInputStream.close();

            System.out.println("Счетчик загружен, значение: " + this.counter.getCount());
        } catch (FileNotFoundException e) {
            this.counter = new Counter();
            saveCounterState();

            System.out.println("Счетчик создан, значение: " + this.counter.getCount());
        }
    }

    private void increase() throws IOException, ClassNotFoundException {
        this.counter.setCount(this.counter.getCount() + 1);
        saveCounterState();
        System.out.println("Счётчик увеличен.\n" + this.counter);
    }

    private void reset() throws IOException, ClassNotFoundException {
        this.counter.setCount(0);
        saveCounterState();
        System.out.println("Счётчик сброшен.\n" + this.counter);
    }

    private void stop() throws IOException, ClassNotFoundException {
        this.saveCounterState();
        System.out.println(this.counter + "\nЗавершаю работу.");
    }

    public void run() throws IOException, ClassNotFoundException {
        Scanner input = new Scanner(System.in);
        String command;

        do {
            System.out.print("Введите команду: ");
            command = input.nextLine();

            if (command.equals("/inc")) {
                this.increase();
            } else if (command.equals("/reset")) {
                this.reset();
            } else if (command.equals("/stop")) {
                this.stop();
                break;
            } else {
                System.out.println("Неизвестная команда.");
            }
        } while(true);
    }

    private void saveCounterState() throws IOException, ClassNotFoundException {
        FileOutputStream fileOutputStream = new FileOutputStream(FILENAME);
        ObjectOutputStream objectOutputStream = new ObjectOutputStream(fileOutputStream);

        objectOutputStream.writeObject(this.counter);
        objectOutputStream.close();
    }
}