BicycleDemo.java

public class BicycleDemo
{
    public static void main(String[] args)
    {
        // create two different bike objects
        Bicycle bike1 = new Bicycle();
        Bicycle bike2 = new Bicycle();
        // look at the constructor for format of params
        Bicycle bike3 = new Bicycle(20, 10, 15);

        // invoke methods on these objects
        bike1.changePedalRate(50);
        bike1.speedUp(10);
        bike1.changeGear(2);
        bike1.printStates();

        bike2.changePedalRate(50);
        bike2.speedUp(10);
        bike2.changeGear(2);
        bike2.changePedalRate(40);
        bike2.speedUp(10);
        bike2.changeGear(3);
        bike2.printStates();

        bike3.speedUp(100);
        bike3.changeGear(20);
        bike3.applyBrakes(105);
        bike3.changeGear(2);
        bike3.printStates();

    }
}