java8 对创建型模式下抽象工厂方法模式

抽象工厂的灵活性就体现在这里，无需改动原有的代码，毕竟对于客户端来说，静态工厂模式在不改动StaticFactory类的代码时无法新增产品，如果采用了抽象工厂模式，就可以轻松的新增拓展类

interface food{}

class A implements food{}
class B implements food{}

interface produce{ food get();}

class FactoryForA implements produce{
    @Override
    public food get() {
        return new A();
    }
}
class FactoryForB implements produce{
    @Override
    public food get() {
        return new B();
    }
}
public class AbstractFactory {
    public void ClientCode(String name){
        food x= new FactoryForA().get();
        x = new FactoryForB().get();
    }
}

public class Test {

 public static void main(String[] args) {

 produceprovider= new FactoryForB ();

 food sender = produce.get();

  }

}

Lambada表达式 

public class Test {

 public static void main(String[] args) {

 produce provider= new produce(()->return new A);

 food sender = provider.get();

  }

}