classes, Car tester, Exercise 02 slide 47

package class170706;

import java.util.Scanner;

public class CarTester {

    public static void main(String[] args) {
        // create a scanner
        Scanner s = new Scanner(System.in);

        // create a new car
        Car myCar = new Car();
        System.out.printf("default car was created: %s\n\n", myCar);

        do {
            System.out.print("Enter car Number: ");
        } while (!myCar.setCarNumber(s.nextInt()));
        System.out.printf("car number was updated successfuly to: %d\n",
                myCar.getCarNumber());

        int targetSpeed;
        System.out
                .print("Enter target speed (positive=forward , negative=backword: ");
        targetSpeed = s.nextInt();

        System.out.println("\ncar start moving . . .");
        if (targetSpeed > 0) {
            // start moving forward
            myCar.accelerate();
        } else {
            // start moving backward
            myCar.decelerate();
        }
        System.out.printf("car is accelerating: %s\n", myCar);

        // continue moving
        for (int i = 1; i < Math.abs(targetSpeed); i += 1) {
            // speed up in the same direction
            myCar.accelerate();
            System.out.printf("car is accelerating: %s\n", myCar);
        }

        // decelerating 2km/h
        System.out.println("\nstart decelerating 2 km/h . . .");
        myCar.decelerate();
        System.out.printf("car is decelerating: %s\n", myCar);
        myCar.decelerate();
        System.out.printf("car is decelerating: %s\n", myCar);

        // stop the car
        myCar.stop();
        System.out.printf("\ncar has stopped %s\n", myCar);
    }

}