factory_method.puml

@startuml
skinparam classAttributeIconSize 0
package "Factory Method Pattern"{

    interface IOperate{
        +oprerate(int left,int right):int
    }
    note right:操作协议

    class OperateAdd
    note bottom:加法对象
    class OperateAdd implements IOperate

    class OperateSub
    note bottom:减法对象
    class OperateSub implements IOperate

    interface IOperateFactory{
        +createOperate():IOperate
    }
    note top:定义一个创建对象的接口，具体的创建类型由子类完成
    class AddFactory
    note bottom:加法工厂
    class AddFactory implements IOperateFactory

    class SubFactory
    note bottom:减法工厂
    class SubFactory implements IOperateFactory

    IOperateFactory .> IOperate
}
@enduml