Final Review Question 2

// Predict the output.  Show calculations to justify your answer.

// ***********************************************
// Source code file Main.java
// ***********************************************
public class Main {

    public static void main(String[] args) {
        
        Car c1 = new Car("1G6AF5SX6D0125409", "silver");
        System.out.println(c1);
        
        for(int i = 1; i <= 5; i++) {
            c1.pressAccelerator( );
        }
        c1.drive(2.0);

        for(int i = 1; i <= 2; i++) {
            c1.pressBrake( );
        }
        c1.drive(1.0);
        
        System.out.println(String.format( 
            "c1 location: %.2f", c1.getLocation( )));                

        SportsCar c2 = new SportsCar(
            "2H7BG5TY2E0243862", "red");        
        System.out.println(c2);
        
        for(int i = 1; i <= 5; i++) {
            c2.pressAccelerator( );
        }
        c2.drive(2.0);

        for(int i = 1; i <= 3; i++) {
            c2.pressBrake( );
        }
        c2.drive(1.0);

        System.out.println(String.format( 
            "c2 location: %.2f", c2.getLocation( )));                
    }
}

// ***********************************************
// Source code file Car.java
// ***********************************************
public class Car {
    private String vin, color;
    protected double location, speed;
    protected double maxSpeed;
    protected double acceleration;
    
    public Car(String theVin, String theColor) {
        vin = theVin;
        color = theColor;
        location = 0.0;
        speed = 0.0;
        maxSpeed = 100.0;
        acceleration = 10.0;
    }

    public String getVin() {
        return vin;
    }

    public String getColor() {
        return color;
    }

    public double getLocation() {
        return location;
    }

    public double getSpeed() {
        return speed;
    }

    public void pressAccelerator( ) {
        speed += acceleration;
        if (speed >= maxSpeed) {
            speed = maxSpeed;
        }
    }

    public void pressBrake( ) {
        speed -= 20;
        if (speed < 0) {
            speed = 0;
        }
    }

    public void drive(double theTime) {
        location += speed * theTime;
    }

    @Override
    public String toString( ) {
        return String.format(
            "car: VIN=%s Color=%s ", vin, color);              
    }
}

// ***********************************************
// Source code file: SportsCar.java
// ***********************************************
public class SportsCar extends Car {

    public SportsCar(String theVin, String theColor) {
        super(theVin, theColor);
        maxSpeed = 200;
        acceleration = 20;
    }
    
    @Override
    public String toString( ) {
        return "sports" + super.toString( );
    }
}