public class Car { private String name; private double speed; public Car(String name, double speed) { this.name = name; this.speed = speed; if (!isCorrectSpeed()) this.speed = -1; } public boolean isCorrectSpeed() { if (speed <= 0 || speed > 250) return false; return true; } public String getName() { return name; } public void setName(String name) { this.name = name; } public double getSpeed() { return speed; } public void setSpeed(double speed) { this.speed = speed; } public double getDistance() { return 24 * speed; } }