( )描述对操作规范的说明,其只说明操作应该做什么,并没有定义操作如何做。
- A.接口
- B.多态
- C.封装
- D.继承
正确答案及解析
正确答案
解析
接口:描述对操作规范的说明,其只说明操作应该做什么,并没有定义操作如何做。可以将接口理解 成为类的一个特例,它规定了实现此接口的类的操作方法,把真正的实现细节交由实现该接口的类去完成。
多态:不同的对象收到同一消息可以进行不同的响应,并且会产生完全不同的结果,这种现象称为多态。
封装:将相关的概念组成一个单元模块,并通过一个名称来引用它。面向对象封装是将数据和基于数据的操作封装成一个整体对象,对数据的访问或修改只能通过对象对外提供的接口进行。
继承:表示类之间的层次关系(父类与子类),这种关系使得某类对象可以继承另外一类对象的特征。
包含此试题的试卷
你可能感兴趣的试题
Advancements in ( )have contributed to the growth of the automotive industry through the creation and evolution of self-driving vehicles.
-
- A.Artificial Intelligence
- B.Cloud Computing
- C.Internet of Things
- D.Big Data
- 查看答案
In project human resource management , ( )is not a source of power for the project manager.
-
- A.referent power
- B.expert power
- C.reward power
- D.audit power
- 查看答案
At the project establishment stage , the feasibility study mainly includes techinical feasibility analysis , ( ), operation environment feasibility analysis and other aspects of feasibility analysis.
-
- A.detail feasibility analysis
- B.opportunity analysis
- C.economic feasibility analysis
- D.risk analysis
- 查看答案
( )is a grid that shows the project resources assigned to each work package.
-
- A.Stakeholder engagement assessment matrix
- B.Requirements traceability matrix
- C.Probability and impact matrix
- D.Responsibility assignment matrix
- 查看答案
Xinhua News Agency reported in January 2022,Chian will further promote the developmet of a digital economy during the 14th Five-Year Plan eriod(2021-2025). The plan also emphasized industrial ( )transformation.
-
- A.digital
- B.networking
- C.intelligentize
- D.informatization
- 查看答案