面试题复习-常用设计模式-工厂模式

手写一个工厂模式

产品接口：

package com.ajax.pattern.factorymethod;

public interface Fruit {
    void desc();
}

产品1：

package com.ajax.pattern.factorymethod;

public class Apple implements Fruit {
    @Override
    public void desc() {
        System.out.println("苹果");
    }
}

产品2：

package com.ajax.pattern.factorymethod;

public class Orange implements Fruit {
    @Override
    public void desc() {
        System.out.println("橙子");
    }
}

工厂接口：

package com.ajax.pattern.factorymethod;

public interface FruitFactory {
    Fruit getFruit();
}

产品1工厂：

package com.ajax.pattern.factorymethod;

public class AppleFactory implements FruitFactory {
    @Override
    public Fruit getFruit() {
        return new Apple();
    }
}

产品2工厂：

package com.ajax.pattern.factorymethod;

public class OrangeFactory implements FruitFactory {
    @Override
    public Fruit getFruit() {
        return new Orange();
    }
}

运行：

package com.ajax.pattern.factorymethod;

public class Run {
    public static void main(String[] args) {
        Fruit fruit1 = new AppleFactory().getFruit();
        fruit1.desc();
        Fruit fruit2 = new OrangeFactory().getFruit();
        fruit2.desc();
    }
}

原文地址：https://www.cnblogs.com/caizhiqin/p/11269280.html