java设计模式之---抽象工厂模式

来源：互联网发布：群智感知与感知大数据编辑：程序博客网时间：2024/05/21 16:54

概念

抽象工厂模式是所有形态的工厂模式中最为抽象和最具一般性的. 抽象工厂模式可以向客户端提供一个接口, 使得客户端不必指定产品的具体类型的情况下, 能够创建多个产品族的产品对象

产品族和产品等级结构图

代码

public interface Fruit {void get();}

public abstract class Apple implements Fruit {@Overridepublic abstract void get();}

public abstract class Banana implements Fruit {@Overridepublic abstract void get();}

public class NorthApple extends Apple {@Overridepublic void get() {System.out.println("北方苹果");}}

public class SouthApple extends Apple {@Overridepublic void get() {System.out.println("南方苹果");}}

public class NorthBanana extends Banana {@Overridepublic void get() {System.out.println("北方香蕉");}}

public class SouthBanana extends Banana {@Overridepublic void get() {System.out.println("南方香蕉");}}

public interface FruitFactory {Fruit getApple();Fruit getBanana();}

public class NorthFruitFactory implements FruitFactory {@Overridepublic Fruit getApple() {return new NorthApple();}@Overridepublic Fruit getBanana() {return new NorthBanana();}}

public class SouthFruitFactory implements FruitFactory {@Overridepublic Fruit getApple() {return new SouthApple();}@Overridepublic Fruit getBanana() {return new SouthBanana();}}

总结: 抽象工厂中方法对应产品结构, 具体工厂对应产品族(在本例中: 产品结构为苹果和香蕉, 产品族为南方和北方)

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