public class Car {

public static final int MAX_SPEED = 250;

public static final int MIN_SPEED = 1;

public String name;

public Integer speed;

public Car() {

name = null;

speed = null;

}

public boolean setSpeed(int speed) {

if(speed >= MIN_SPEED && speed <= MAX_SPEED)

{

this.speed = speed;

return true;

}

return false;

}

@Override

public boolean equals(Object o) {

if (this == o)

return true;

if (o == null || getClass() != o.getClass()) return false;

Car car = (Car) o;

return name.equals(car.name);

}

@Override

public int hashCode() {

return name.hashCode();

}

}