标签:return String color ---- 抽象 Stick new 设计模式 public
抽象工厂模式可以理解为根据需要创建相应的工厂,进而生产出对应的产品。
接着上一篇文章,定义一个AbstractFactory 提供 BallFactory 和 StickFactory 中的生产方法。
1、定义抽象工厂类
/** * @Author: guaniu * @Description: 抽象工厂类:生成Ball工厂和Stick工厂 * @Date: Create in 9:51 2020/12/6 * @Modified by */ public abstract class AbstractFactory { public abstract Ball getBall(String color); public abstract Stick getStick(String color); }
2、改造BallFactory
/** * @Author: guaniu * @Description: BallFactory 继承自 AbstractFactory,同时有getBall() 和 getStick() 方法 * @Date: Create in 9:44 2020/12/6 * @Modified by */ public class BallFactory extends AbstractFactory { @Override public Ball getBall(String color) { if ("red".equalsIgnoreCase(color)){ return new RedBall(); }else if ("green".equalsIgnoreCase(color)){ return new GreenBall(); }else if ("black".equalsIgnoreCase(color)){ return new BlackBall(); }else { try { throw new Exception("No Such Type of Ball!"); } catch (Exception e) { e.printStackTrace(); } } return null; } @Override public Stick getStick(String color) { return null; } }
3、StickFactory
/** * @Author: guaniu * @Description: StickFactory 同样继承自抽象工厂类AbstractFactory * @Date: Create in 9:44 2020/12/6 * @Modified by */ public class StickFactory extends AbstractFactory { @Override public Ball getBall(String color) { return null; } @Override public Stick getStick(String color) { if ("red".equalsIgnoreCase(color)){ return new RedStick(); }else if ("green".equalsIgnoreCase(color)){ return new GreedStick(); }else if ("black".equalsIgnoreCase(color)){ return new BlackStick(); }else { try { throw new Exception("No Such Type of Stick!"); } catch (Exception e) { e.printStackTrace(); } } return null; } }
4、Stick产品
/** * @Author: guaniu * @Description: 定义的Stick类产品 * @Date: Create in 9:47 2020/12/6 * @Modified by */ public interface Stick { void playStick(); }
5、RedStick产品
/** * @Author: guaniu * @Description: * @Date: Create in 9:49 2020/12/6 * @Modified by */ public class RedStick implements Stick{ @Override public void playStick() { System.out.println("Playing RedStick!"); } }
6、GreenStick产品
/** * @Author: guaniu * @Description: * @Date: Create in 9:50 2020/12/6 * @Modified by */ public class GreedStick implements Stick{ @Override public void playStick() { System.out.println("Playing GreenStick!"); } }
7、BlackStick产品
/** * @Author: guaniu * @Description: * @Date: Create in 9:48 2020/12/6 * @Modified by */ public class BlackStick implements Stick{ @Override public void playStick() { System.out.println("Playing BlackStick!"); } }
8、生产Factory的工具类
/** * @Author: guaniu * @Description: * @Date: Create in 9:55 2020/12/6 * @Modified by */ public class FactoryProducer { public static AbstractFactory getFactory(String type){ if ("ball".equalsIgnoreCase(type)){ return new BallFactory(); }else if ("stick".equalsIgnoreCase(type)){ return new StickFactory(); }else { try { throw new Exception("No Such Type of Factory!"); } catch (Exception e) { e.printStackTrace(); } } return null; } }
9、测试类
public class Main { public static void main(String[] args){ String[] types = {"ball", "stick"}; String[] colors = {"red", "black", "green"}; Random random = new Random(); for (int i = 0; i < 10; i++){ String type = types[random.nextInt(2)]; String color = colors[random.nextInt(3)]; AbstractFactory factory = FactoryProducer.getFactory(type); // 抽象工厂 Ball ball = factory.getBall(color); Stick stick = factory.getStick(color); if (ball != null){ ball.playBall(); } if (stick != null){ stick.playStick(); } } } }
标签:return,String,color,----,抽象,Stick,new,设计模式,public 来源: https://www.cnblogs.com/guaniu2750/p/14056486.html
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