So , i want to create a countdown for a user inputed date in a service class.Right now i have problems with the countdown.It seems no matter what it only substracts 1 second and doesn't go further.Here is the code:

the logic for the countdown

```
package com.example.service;

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

public class CounterService {
    LocalDateTime dateTime;

    public LocalDateTime getDateTime(){
        return dateTime;
    }

    public void setDateTime(LocalDateTime dateTime) {
        this.dateTime = dateTime;
    }

    public LocalDateTime parseDate(String eventDate) {
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
        dateTime = LocalDateTime.parse(eventDate, formatter);
        return dateTime;
    }

    public static void main(String[] args) {

        CounterService cs = new CounterService();
        LocalDateTime a = LocalDateTime.of(2021,11,11,21,43,44);
        cs.setDateTime(a);

        Runnable r = new Counter(cs);
        new Thread(r).start();

    }
}

```

and the Runnable

```
package com.example.service;

import java.time.LocalDateTime;

public class Counter implements Runnable {
    CounterService counter;

    public Counter(CounterService cs) {
        this.counter = cs;
    }

    public void setCounter(CounterService cs) {
        this.counter = cs;
    }

    public void run() {
        LocalDateTime countFromThisDate = counter.getDateTime();
        try {
            boolean x = true;
            while (x) {
                LocalDateTime substracting = countFromThisDate.minusSeconds(1);
                Thread.sleep(1000);
                System.out.println(substracting);
            }
        } catch (InterruptedException ex) {
            ex.printStackTrace();
        }
    }
}

```

also how will i be able to add this counter (after it works) so that it refreshes dynamically and substracts each second one by one?