工厂模式

类图

工厂模式.png

结构很简单，一目了然，下面看实际的代码实现。

使用

调用

package com.company;

public class Main {

    public static void main(String[] args) {
    // write your code here
        Product one = new FactoryA().createProducte();
        one.printInformation();

        Product two = new FactoryB().createProducte();
        two.printInformation();
    }
}

输出

这是A产品
这是B产品

Process finished with exit code 0

产品接口

package com.company;

public interface Product {
    void printInformation();
}

A产品

package com.company;

public class ProductA implements Product {
    @Override
    public void printInformation() {
        System.out.println("这是A产品");
    }
}

B产品

package com.company;

public class ProductB implements Product {
    @Override
    public void printInformation() {
        System.out.println("这是B产品");
    }
}

工厂接口

package com.company;

public interface Factory {
    /**
     * 根据字符串选择具体的工厂
     * @return
     */
    Product createProducte();
}

A工厂

package com.company;

public class FactoryA implements Factory {
    @Override
    public Product createProducte() {
        return new ProductA();
    }
}

B工厂

package com.company;

public class FactoryB implements Factory {
    @Override
    public Product createProducte() {
        return new ProductB();
    }
}

返回