Car.java

import java.util.Random;

public class Car {
    private String name;
    private int speed;
    private int location;

    private static int minimumSpeed = 0;
    private static int maximumSpeed = 120;

    public static int getMinimumSpeed() {
        return minimumSpeed;
    }

    public static void setMinimumSpeed(int minimumSpeed) {
        Car.minimumSpeed = minimumSpeed;
    }

    public static int getMaximumSpeed() {
        return maximumSpeed;
    }

    public static void setMaximumSpeed(int maximumSpeed) {
        Car.maximumSpeed = maximumSpeed;
    }

    public Car(String name, int speed) {
        this.name = name;
        this.setLocation(0);
        this.speed = speed;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getSpeed() {
        return speed;
    }

    public void setSpeed(int speed) {
        if (speed > Car.maximumSpeed) {
            this.speed = Car.maximumSpeed;
        } else if (speed < Car.minimumSpeed) {
            this.speed = Car.minimumSpeed;
        } else {
            this.speed = speed;
        }
    }

    public int getLocation() {
        return location;
    }

    public void setLocation(int location) {
        this.location = location;
    }

    public String toString() {
        return "Car [name=" + name + ", speed=" + speed + ", location="
                + location + "]";
    }

    public void accelerate() {
        this.speed += 2;
        if (this.speed > Car.maximumSpeed) {
            this.speed = Car.maximumSpeed;
        }
    }

    public void decelerate() {
        this.speed -= 2;
        if (this.speed < Car.minimumSpeed) {
            this.speed = Car.minimumSpeed;
        }
    }

    public int randomSpeedChange() {
        int result;
        Random randomSpeed = new Random();
        result = (randomSpeed.nextInt(21) - 10);
        return result;
    }

}