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Java-马士兵设计模式学习笔记-工厂模式-简单工厂

开发者馨冉技术 2022年11月8日

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一、概述

1.目标：要控制任意类型交通工具的生产模式

2.目标有两层意思(1)任意类型 (2)生产模式，所以对应的，要这两个层面上抽象(Movable,VehicleFactory)，利用接口，实现多态

二、类结构

1.Interface Movable.java

2.Car.java

3.Plane.java

4.Interface VehicleFactory.java

5.CarFactory.java

6.PlaneFactory.java

三、代码

1.Movable.java

public interface Movable {
void run();
}

2.Car.java

public class Car implements Movable {public Car() {
}public void run() {
System.out.println("Car running...............");
}}

3.Plane.java

public class Plane implements Movable {@Override
public void run() {
System.out.println("飞机飞翔中。。。。");
}}

4.VehicleFactory.java

public interface VehicleFactory {
Movable create();
}

5.CarFactory.java

public class CarFactory implements VehicleFactory {private static Car car = new Car();
@Override
public Movable create() {
return car;
}}

6.PlaneFactory.java

public class PlaneFactory implements VehicleFactory {private static Plane plane = new Plane();
@Override
public Movable create() {
return plane;
}}

7.Test.java

public class Test {@org.junit.Test
public void test() {
VehicleFactory factory = new CarFactory();
Movable m1 = factory.create();
m1.run();Movable m2 = factory.create();
System.out.println(m1 == m2);
System.out.println(m1.equals(m2));System.out.println("******************************");factory = new PlaneFactory();
m1 = factory.create();
m1.run();m2 = factory.create();
System.out.println(m1 == m2);
System.out.println(m1.equals(m2));
}
}

8.测试结果