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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,6 +1,94 @@ | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.Scanner; | ||
|
|
||
| class Car { | ||
| private String name; | ||
| private double speed; | ||
|
|
||
| public Car(String name, double speed) { | ||
| this.name = name; | ||
| this.speed = speed; | ||
| } | ||
|
|
||
| public String getName() { | ||
| return name; | ||
| } | ||
|
|
||
| public double getSpeed() { | ||
| return speed; | ||
| } | ||
|
|
||
| public double distance() { | ||
| return speed * 24; | ||
| } | ||
| } | ||
|
|
||
| class Race { | ||
| private List<Car> cars; | ||
|
|
||
| public Race() { | ||
| cars = new ArrayList<>(); | ||
| } | ||
|
|
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| public void addCar(Car car) { | ||
| cars.add(car); | ||
| } | ||
|
|
||
| public Car Leader() { | ||
| if (cars.isEmpty()) { | ||
| return null; | ||
| } | ||
| Car leader = cars.get(0); | ||
| for (Car car : cars) { | ||
| if (car.distance() > leader.distance()) { | ||
| leader = car; | ||
| } | ||
| } | ||
| return leader; | ||
| } | ||
| } | ||
|
|
||
| public class Main { | ||
| private static Car getCarData() { | ||
| Scanner scanner = new Scanner(System.in); | ||
| String name; | ||
| double speed; | ||
|
|
||
| while (true) { | ||
| System.out.print("Введите название автомобиля: "); | ||
| name = scanner.nextLine(); | ||
|
|
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| System.out.print("Введите скорость автомобиля: "); | ||
| String speedInput = scanner.nextLine(); | ||
|
|
||
| try { | ||
| if (speedInput.contains(".")) { | ||
| throw new NumberFormatException("Число с плавающей точкой не допустимо."); | ||
| } | ||
| speed = Double.parseDouble(speedInput); | ||
| if (speed > 0 && speed <= 250) { | ||
| return new Car(name, speed); | ||
| } else { | ||
| System.out.println("Неправильная скорость автомобиля"); | ||
| } | ||
| } catch (NumberFormatException e) { | ||
| System.out.println("Пожалуйста, введите корректное число для скорости."); | ||
| } | ||
| } | ||
| } | ||
|
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| public static void main(String[] args) { | ||
| System.out.println("Hello world!"); | ||
| Race race = new Race(); | ||
|
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| for (int i = 0; i < 3; i++) { | ||
| Car car = getCarData(); | ||
| race.addCar(car); | ||
| } | ||
|
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||
| Car leader = race.Leader(); | ||
| if (leader != null) { | ||
| System.out.println("Самая быстрая машина: " + leader.getName()); | ||
| } | ||
| } | ||
| } | ||
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Рекомендация: - хорошей практикой является делать вызов scanner.close() после того, как сканнер больше не используется. Это необходимо для того, что бы этот объект не потреблял ресурсы, тогда когда это уже не требуется.