Java 简单工厂模式

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