02工厂模式（创建型模式）

有代码，虽然某种程度不符合设计原则，但实际使用最多）

增加产品族，不可以增加产品，可以增加产品族）

示例代码

public interface Car { void run(); }

示例代码

public interface Car { void run(); } public interface CarFactory { Car createCar(); } public class KaCheFactory implements CarFactory { @Override public Car createCar() { return new KaChe(); } } public class QiCheFactory implements CarFactory { @Override public Car createCar() { return new QiChe(); } }

public class Client { public static void main(String[] args) { Car c1 = new KaCheFactory().createCar(); Car c2 = new QiCheFactory().createCar(); c1.run(); c2.run(); } }

简单工厂模式和工厂方法模式PK:

示例代码

public interface CarFactory { Engine createEngine(); Seat createSeat(); Tyre createTyre(); } public class LowCarFactory implements CarFactory { @Override public Engine createEngine() { return new LowEngine(); } @Override public Seat createSeat() { return new LowSeat(); } @Override public Tyre createTyre() { return new LowTyre(); } } public class LuxuryCarFactory implements CarFactory { @Override public Engine createEngine() { return new LuxuryEngine(); } @Override public Seat createSeat() { return new LuxurySeat(); } @Override public Tyre createTyre() { return new LuxuryTyre(); } }

public class Client { public static void main(String[] args) { CarFactory factory = new LuxuryCarFactory(); Engine e = factory.createEngine(); e.run(); e.start(); } }

文章来源: 02工厂模式（创建型模式）