Homework_OOP/targilim 1-2/clock and car classes

// main
import java.util.Scanner;
public class objectsClassesFirstLesson {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        Clock timer = new Clock();
        timer.setHours(23);
        timer.setMinutes(59);
        timer.setSeconds(59);
        timer.show(); // 23:59:59
        timer.tick(); //+1 second
        timer.show(); // 00:00:00

        Car bmw = new Car(); //car_id = null, current_speed = 0(default)
        char drive;
        bmw.setCar_id(1234567);// car_id =  1234567 current_speed = 0

        System.out.println("To increase speed write: +\nTo decrease speed write: -\nTo stop and see cars number write: stop!");
        do {
            drive = sc.next().charAt(0);
            switch (drive) {
                case '+':
                    bmw.faster(); //current_speed+=1
                    break;
                case '-':
                    if (bmw.getCurrent_speed() > 0) { //if current_speed = 0 prints and gets out from the loop
                        bmw.slower(); //current_speed-=1
                        break;
                    } else {
                        drive = 's'; //withot break for the going to next case
                    }
                case 's':
                    bmw.stopAndPrint();
                    break;
            }
        } while (drive != 's');
    }
}

//Targil 1
public class Clock {
    private int hours, minutes, seconds;

    public boolean setHours(int hours) {
        if(hours<=0||hours>24){
            this.hours = 0;
            return false;
        }
        else{
            this.hours = hours;
            return true;
        }
    }

    public boolean setMinutes(int minutes) {
        if(minutes<=0||minutes>60){
            this.minutes = 0;
            return false;
        }
        else{
            this.minutes = minutes;
            return true;
        }
    }

    public boolean setSeconds(int seconds) {
        if(seconds<=0||seconds>60){
            this.seconds = 0;
            return false;
        }
        else{
            this.seconds = seconds;
            return true;
        }
    }

    public int getHours() {
        return hours;
    }

    public int getMinutes() {
        return minutes;
    }

    public int getSeconds() {
        return seconds;
    }

    public void tick() {
        this.seconds+=1;
        if (this.seconds>59){
            this.seconds = 0;
            this.minutes+=1;
        }
        if(this.minutes>59){
            this.minutes=0;
            this.hours+=1;
        }
        if(this.hours>23){
            this.hours=0;
        }
    }

    public void show() {
        if(this.hours<10)
            System.out.print("0");
        System.out.print(hours+":");
        if(this.minutes<10)
            System.out.print("0");
        System.out.print(minutes+":");
        if(this.seconds<10)
            System.out.print("0");
        System.out.print(seconds);
        System.out.println();
    }
}

//Targil 2
public class Car {
    int car_id, current_speed = 0;

    public void setCar_id(int car_id) {
        this.car_id = car_id;
    }

    public int getCar_id() {
        return car_id;
    }

    public int getCurrent_speed() {
        return current_speed;
    }

    public void faster(){
        current_speed +=1;
    }

    public void slower(){
        if(current_speed>0){
            current_speed -=1;
        }
        else stopAndPrint();
    }

    public void stopAndPrint(){
        System.out.println("Starting to stop!");
        if(current_speed!=0) {
            for (int i = current_speed; i > 0; i -= 1) {
                System.out.print(i + " ");
            }
            System.out.println();
        }
        System.out.println(car_id);
    }
}