工厂模式

一、大致结构（其模式主要是具体的产品有对应的具体工厂）

1、抽象工厂类

2、抽象产品类

3、具体工厂类

4、具体产品类

二、代码

1、抽象工厂类

Factory.java

package com.factory;

public interface Factory {
    
    Fruit createFruit();

}

2、抽象产品类

 

package com.factory;

public interface Fruit {
    
    public void grow();
    
    
}

 

3、具体产品类Apple.java与Orangle.java

 

package com.factory;

public class Apple implements Fruit {

    @Override
    public void grow() {
        System.out.println("我真在成长......");

    }

}

 

package com.factory;

public class Orangle implements Fruit {

    @Override
    public void grow() {
        System.out.println("grow......");

    }

}

4、具体工厂类AppleFactory与OrangleFactory.java

package com.factory;

public class AppleFactory implements Factory {

    @Override
    public Fruit createFruit() {
        return new Apple();
    }

}

package com.factory;

public class OrangleFactory implements Factory {

    @Override
    public Fruit createFruit() {
        return new Orangle();
    }

}

 

5、测试类Test.java

package com.factory;

public class Test {
    
    public static void main(String[] args) {
        Fruit apple = new AppleFactory().createFruit();
        Fruit orangle = new OrangleFactory().createFruit();
        
        apple.grow();
        orangle.grow();
    }
    
}