工厂模式

工厂模式分为简单工厂模式 工厂方法模式  抽象工厂模式

简单工厂模式

举例 知道汽车品牌，生产对应的汽车

public class CarFactory {

public static  Car createCar(String type){
if("奥迪".equals(type)){
return new Audi();
}else if("比亚迪".equals(type)){
return new Byd();
}else{
return null;
}
}
}

工厂方法模式

汽车接口

public interface Car {
void run();
}

奥迪车类

public class Audi implements Car {
@Override
public void run() {
System.out.println("奥迪再跑！");
}
}

奔驰车类

public class Benz implements Car {
@Override
public void run() {
System.out.println("奔驰再跑！");
}
}

汽车工厂接口

public interface CarFactory {
Car createCar();
}

奥迪车工厂

public class AudiFactory implements CarFactory {
@Override
public Car createCar() {
return new Audi();
}
}

奔驰车工厂

public class BenzFactory implements CarFactory {
@Override
public Car createCar() {
return new Benz();
}
}

public class Client {
public static void main(String[] args) {
Car c1 = new AudiFactory().createCar();
Car c2 = new BydFactory().createCar();

c1.run();
c2.run();
}
}

抽象工厂模式

发动机类

public interface Engine {
void run();
void start();
}

class LuxuryEngine implements Engine{
@Override
public void run() {
System.out.println("转的快！");
}

@Override
public void start() {
System.out.println("启动快!可以自动启停！");
}
}

class LowEngine implements Engine{
@Override
public void run() {
System.out.println("转的慢！");
}

@Override
public void start() {
System.out.println("启动慢!");
}
}

座椅类

public interface Seat {
void massage();
}

class LuxurySeat implements Seat {
@Override
public void massage() {
System.out.println("可以自动按摩！");
}
}

class LowSeat implements Seat {
@Override
public void massage() {
System.out.println("不能按摩！");
}
}

轮胎类

public interface Tyre {
void revolve();
}

class LuxuryTyre implements Tyre {
@Override
public void revolve() {
System.out.println("旋转不磨损！");
}
}


class LowTyre implements Tyre {
@Override
public void revolve() {
System.out.println("旋转磨损快！");
}
}

汽车工厂接口

public interface CarFactory {
Engine createEngine();
Seat createSeat();
Tyre createTyre();
}

低端汽车制造工厂

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();
}
}

高端汽车制造工厂

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();
}
}