java 工厂方法模式

1、以一个获取交通工具然后去上班的例子来说明，首先，创建Car接口。package com.boxun;/** * 车接口 * Created by kstrive on 2017/5/5. */public interface Car { /** * 上班函数 */ void gotoWork();}

3、创建公共汽车类，Bus实现Car接口：package com.boxun;/** * 公交车 * Created by kstrive on 2017/5/5. */public class Bus implements Car { @Override public void gotoWork() { System.out.println("坐公交车去上班！"); }}

5、创建自行车工厂类，实现车工厂接口，并在getCar方法返回Bike对象：package 罕铞泱殳com.boxu荏鱿胫协n;/** * 自行车工厂 * Created by kstrive on 2017/5/5. */public class BikeFactory implements ICarFactory { @Override public Car getCar() { return new Bike(); }}

7、最后，我们写一个测试类来测试验证我尺攵跋赈们的工厂方法，如图，可见输出结果，如我们所设计：package com.boxun;/** * 测试类 * Created by kstrive on 2017/5/5. */public class TestFactory { public static void main(String[] args) { TestFactory tf = new TestFactory(); tf.test();; } public void test() { ICarFactory factory = null; // bike factory = new BikeFactory(); Car bike = factory.getCar(); bike.gotoWork(); // bus factory = new BusFactory(); Car bus = factory.getCar(); bus.gotoWork(); }}