在设计面向对象的程序的时，模式不是一定要套的，但是有一些原则最好是遵守这些原则已知的有七个，包括：开闭原则、里氏代换原则、依赖倒转原则、合成/聚合复用原则、迪米特法则、接口隔离原则，单一职责原则，今天小编就来说说关于面向对象的设计方法的特点?下面更多详细答案一起来看看吧!
面向对象的设计方法的特点
在设计面向对象的程序的时，模式不是一定要套的，但是有一些原则最好是遵守。这些原则已知的有七个，包括：开闭原则、里氏代换原则、依赖倒转原则、合成/聚合复用原则、迪米特法则、接口隔离原则，单一职责原则。
原则简介
其中Robert C. Martin引入了SOLID的说法，包括了其中的五个原则。另外两个，这里把他们算成额外的两个规则。具体如下。
S . Single Responsibility Principle - SRP
An object should have only a single responsibility.
O . Open-Closed Principle - OCP
Software entities should be opened for extension, but closed for modification.
L . Liskvo Substitution Principle - LSP
If S is a subtype of T, the objects of T in a program may be replaced by objects of Type S.
I . Interface Segregation Principle - ISP
many client specific interfaces are better than one general purpose interface.
D . Dependency Inversion Principle - DIP
Depend upon abstractions. Do not depend upon concretions.
Program to an interface, not an implementation.
Ex1 . Law of Demeter - LoD
-- Principle of Least Knowledge
A given object should assume as little as possible about the structure or properties of anything else.
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