UML建模之类图(Class Diagram,UML图) 一、简介 类是对象的集合,展示了对象的结构以及与系统的交互行为。类主要有属性(Attribute)和方法(Method)构成,属性代表对象的状态,如果属性被保存到数据库,此称之为“持久化”;方法代表对象的操作行为,类具有继承关系,可以继承于父类,也可以与其他的Class进行交互。 类图展示...
Sample Below is the sample generated using above configuration over our Pizza entity pizza_class_diagram.png More configuration You can configure this diagram per your needs. Please refer UMLGraph class diagramoptionsfor more configuration. Reference:Class diagram generation from Java sourcefrom ourJCG ...
protected和private不能修饰外部类, default有时也被称作friendly(沿用c++的叫法,虽然java中并没有此修饰符) 为了表示独立性,尽量不用public修饰成员变量 各修饰符的访问权限见下图: 在class diagram中 public用+表示,protected用#表示,private用-表示。 二、类之间的关系 1. 继承Inheritance (1)泛化Generalization: ...
统一建模语言( Unified Modeling Language,UML) ,UML 类图(UML classdiagram), 或简称为类图(class diagram)。(2)可以把两个类放在同一个文件中,但是文件中只能有一个类是公共(public) 类。此外,公共类必须与文件同名。 源代码中的每个类编译成.class文件。 (它演示如何通过在一个类中加入main 方法来测试这个...
Class Diagram provides an overview of the target system by describing the objects and classes inside the system and the relationships between them. It provides a wide variety of usages; from modeling the domain-specific data structure to detailed design of the target system. With the share model...
Class diagrams are a type of diagram that is used to represent the structure of a system by showing the relationships between classes and their attributes and operations. They are a key element of the Unified Modeling Language (UML), which is a standard visual modeling language used to represen...
类图(class diagram)是一种静态结构图(structure diagram),强调的是系统式的建模。是一种面向对象的模型,采用对象,属性,操作,关联等概念展示系统的结构和基础。 类描述对象,是对象的蓝图,而对象是类的可用实例。我们使用类来创建对象。举个例子,我们说马是一种类,一匹白马就是一个对象。 参考《软件工程——实践者...
类图(Class Diagram) 在UML的静态机制中类图是一个重点,它不但是设计人员关心的核心,更是实现人员关注的核心。建模工具也主要根据类图来产生代码。类图在UML的9个图中占据了一个相当重要的地位。 James Rumbaugh对类的定义是:类是具有相似结构、行为和关系的一组对象的描述符。类是面向对象系统中最重要的构造块。
The concept of generalization used during analysis when building a class diagram has a close relationship with the notion of inheritance included in object-oriented programming languages. However, from the point of view of programming, inheritance is a useful mechanism but not especially conceived to ...
Class diagram is also considered as the foundation for component and deployment diagrams. Class diagrams are not only used to visualize the static view of the system but they are also used to construct the executable code for forward and reverse engineering of any system. ...