public static void main(String[] args) {
Car car1 = new Car();
Car car2 = new Car();
Car car3 = new Car();
Car car4 = new Car();
// create car 1
for (int increment = 0; increment < 3; increment++) {
// prompt for user input on car
String color = JOptionPane.showInputDialog(null, "Please enter the car's color.");
String horsePower = JOptionPane.showInputDialog(null, "Please enter the car's horse power.");
int horsePwr = Integer.parseInt(horsePower);
String engineSize = JOptionPane.showInputDialog(null, "Please enter the car's engine size.");
int engine = Integer.parseInt(engineSize);
String make = JOptionPane.showInputDialog(null, "Please enter the car's make");
// create car1
if (increment == 0) {
car1.setColor(color);
car1.setHorsePwr(horsePwr);
car1.setEngine(engine);
car1.setMake(make);
}
// create car2
if (increment == 1) {
car2.setColor(color);
car2.setHorsePwr(horsePwr);
car2.setEngine(engine);
car2.setMake(make);
}
// create car3
if (increment == 2) {
car3.setColor(color);
car3.setHorsePwr(horsePwr);
car3.setEngine(engine);
car3.setMake(make);
// create car 4
car4.setColor(color);
car4.setHorsePwr(horsePwr);
car4.setEngine(engine);
car4.setMake(make);
}
}
// Output cars and count
JOptionPane.showMessageDialog(null, "Car one: " + car1);
JOptionPane.showMessageDialog(null, "Car two: " + car2);
JOptionPane.showMessageDialog(null, "Car three: " + car3);
JOptionPane.showMessageDialog(null, "Car four: " + car4);
JOptionPane.showMessageDialog(null, "Car count is " + Car.getCount());
// compare car 3 and car 4
if (car3.equals(car4)) {
JOptionPane.showMessageDialog(null, "Car three and car four are equal.");
}
}
public static void main(String[] args) {
Engine engine = new Engine(1233455);
Seat seat = new Seat(646589);
GasTank gasTank = new GasTank(1897464);
Car myCar = new Car();
Car otherCar = new Car();
myCar.setEngine(engine);
myCar.setSeat(seat);
myCar.setGasTank(gasTank);
System.out.println(myCar.getEngine().getSerialNumber());
System.out.println(myCar.getSeat().getSerialNumber());
System.out.println(myCar.getGasTank().getSerialNumber());
myCar = null; // objeto otherCar destruído
otherCar.setEngine(engine); /*otherCar usa o motor do myCar que foi destruído, assim
percebemos que com a destruição de myCar, seus componentes - os objetos engine, seat
e gasTank continuam a existir. Isso exemplifica o conceito de agregação*/
}
@Override
public void buildEngine() {
car.setEngine("3.5L Duramax V 6 DOHC");
}
