面试题复习-常用设计模式-抽象工厂模式

抽象工厂与产品：

package com.ajax.pattern.abstractfactory;

public interface FruitFactory {
    /**
     * 果肉
     * @return
     */
    Meat getMeat();

    /**
     * 果皮
     * @return
     */
    Skin getSkin();
}

package com.ajax.pattern.abstractfactory;

public abstract class Meat {
     abstract void desc();
}

package com.ajax.pattern.abstractfactory;

public abstract class Skin {
    abstract void desc();
}

第一套产品：

package com.ajax.pattern.abstractfactory;

public class AppleMeat extends Meat {
    @Override
    void desc() {
        System.out.println("苹果肉");
    }
}

package com.ajax.pattern.abstractfactory;

public class AppleSkin extends Skin {
    @Override
    void desc() {
        System.out.println("苹果皮");
    }
}

第二套产品：

package com.ajax.pattern.abstractfactory;

public class OrangeMeat extends Meat {
    @Override
    void desc() {
        System.out.println("橙肉");
    }
}

package com.ajax.pattern.abstractfactory;

public class OrangeSkin extends Skin {
    @Override
    void desc() {
        System.out.println("橙皮");
    }
}

抽象工厂实现：

package com.ajax.pattern.abstractfactory;

public class AppleFactory implements FruitFactory {
    @Override
    public Meat getMeat() {
        return new AppleMeat();
    }

    @Override
    public Skin getSkin() {
        return new AppleSkin();
    }
}

package com.ajax.pattern.abstractfactory;

public class OrangeFactory implements FruitFactory {
    @Override
    public Meat getMeat() {
        return new OrangeMeat();
    }

    @Override
    public Skin getSkin() {
        return new OrangeSkin();
    }
}

运行：

package com.ajax.pattern.abstractfactory;

public class Run {
    public static void main(String[] args) {
        FruitFactory f1 = new AppleFactory();
        f1.getMeat().desc();
        f1.getSkin().desc();
        FruitFactory f2 = new OrangeFactory();
        f2.getMeat().desc();
        f2.getSkin().desc();
    }
}