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...
// Person.javapublicclassPerson{privateStringname;// 姓名privateintage;// 年龄publicPerson(Stringname,intage){// 构造函数this.name=name;this.age=age;}// Getter 和 Setter 方法publicStringgetName(){returnname;}publicvoidsetName(Stringname){this.name=name;}publicintgetAge(){returnage;}publicvoid...
In a dialog system, classes can represent various types of components, such as dialog managers, language models, and user interfaces. For example, a class diagram for a dialog system might show the relationship between a dialog manager class, which is responsible for managing the flow of the ...
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。类...
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...
Effective Design: Public Methods:An object’spublicmethods can be used by other objects to interact with the object. Thepublicmethods and variables of an object make up itsinterface. The example below shows the Java class definition that corresponds to the design given in the UML diagram. It ...
类与类之间的关系图(Class Diagram,UML图) 4、多维关联(N-aryAssociation)5、泛化(Generalization)6、依赖(Dependency)7、聚合(Aggregation)8、组合(Composite)四、总结一、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...
To see the list of methods, fields, and other code elements, select the appropriate icon on the diagram toolbar located on top of the diagram editor. The lists are displayed based on the selected visibility level, which you can change. For example, to view protected methods, click on the...
Each selected value can be copied by pressingCtrl+C- for example into an IDE. Classes, interfaces, enums, annotations, exceptions are distinguished by different background color. Selection of a class shows its preview. Double click on a class shows its class diagram. ...
UML class diagram example (click on image to modify online) How to create class diagrams Before you jump in and start drawing class diagrams, get familiar with UML shapes and the basic elements. The class shape itself is a rectangle divided into three sections: Upper section: This section is...