Java Class Asigtment

package Class;

/* What Is a class?
 *
 * in the world, you'll often find many individual objects all of the
 * same kind. There may be thousands of other bicycle in existence,
 * all of the same make and model. Each bicycle was built from the
 * same set of blueprints and therefore contains the same components.
 * in object-oriented terms, we say that your bicycle is an instance of
 * the class of objects are created.
 *
 * The following Bicycle class is one possible implementation of a bicycle:
 */


class Bicycle
{
    int cadence = 10;
    int speed = 0;
    int gear = 1;

    void changeCadence(int newValue)
    {
        cadence = newValue;
    }

    void changeGear(int newValue)
    {
        gear = newValue;
    }

    void speedUp(int increment)
    {
        speed = speed + increment;
    }

    void applyBrakers(int decrement)
    {
        speed = speed - decrement;
    }

    void printState()
    {
        System.out.println("cadence : " + cadence + "\n"
                            + "speed   : " + speed + "\n"
                            + "gear    : " + gear + "\n");
    }
}

/*The syntax of the java programming language will look to you,
 * but the design of this class is based on the previous discussion of
 * bicycle objects. The fields cadence, speed, and gear represent
 * the object's state, and the methods (changeCadence,
 * changeGear, sppedUp etc.) define its interaction with the outside world.
 *
 * You many have notice that the Bicycle class does not contain a
 * main method. That's because it's not a complete application; it's just
 * the blueprint for bicycles that might be used in an application. The
 * responsibility of creating and using new Bicycle objects belongs to
 * some other class in your application.
 *
 * Here's BicycleDemo class that creates two separate Bicycle
 * objects and invokes their methods:
 */


public class BycycleDemo
{
    public static void main(String[] args)
    {
        // Create two different
        // Bicycle objects
        Bicycle bike1 = new Bicycle();
        Bicycle bike2 = new Bicycle();


//      The output of this test prints the ending pedal cadence, spped, and
//      gear for the two bicycles:

        // Invoke methods on
        // those objects
        bike1.changeCadence(50);
        bike1.speedUp(10);
        bike1.changeGear(2);
        bike1.printState();

        bike2.changeCadence(50);
        bike2.speedUp(20);
        bike2.changeGear(2);
        bike2.changeCadence(40);
        bike2.speedUp(10);
        bike2.changeGear(3);
        bike2.printState();


    }
}