car.java

java2 primer plus一书源程序

public class Car 
{
    // Transmission types
    public static final int AUTOMATIC = 0;
    public static final int TIPTRONIC = 1;
    public static final int MANUAL = 2;

    // Attributes
    protected String typeOfCar;
    protected int horsePower;
    protected int maximumSpeed;
    protected int numberOfDoors;
    protected String paint;
    protected int gasCapacity;
    protected int oilCapacity;
    protected int transmission;

    // State attributes
    protected boolean running = false;
    protected int currentSpeed;
    protected int currentGas;
    protected int currentOil;

    public Car( String typeOfCar,
                int horsePower,
                int maximumSpeed,
                int numberOfDoors,
                String paint,
                int gasCapacity,
                int oilCapacity,
                int transmission )
    {
        this.typeOfCar = typeOfCar;
        this.horsePower = horsePower;
        this.maximumSpeed = maximumSpeed;
        this.numberOfDoors = numberOfDoors;
        this.paint = paint;
        this.gasCapacity = gasCapacity;
        this.oilCapacity = oilCapacity;
        this.transmission = transmission;
    }

    public void start()
    {
        running = true;
    }

    public void stop()
    {
        running = false;
    }

    public boolean isRunning()
    {
        return running;
    }

    public void accelerate()
    {
        currentSpeed += 5;
    }

    public void decelerate()
    {
        currentSpeed -= 5;
    }

    public int getCurrentSpeed()
    {
        return currentSpeed;
    }

    public String toString()
    {
        return typeOfCar; 
    }
}