UML class diagram UML Unified Modeling Language The

UML class diagram

UML § Unified Modeling Language; 統一塑模語言 § The Unified Modeling Language (UML) is a generalpurpose, developmental, modeling language in the field of software engineering, that is intended to provide a standard way to visualize the design of a system. 國立成功大學機械 程學系虛擬實境與多媒體研究室 2016/12/12 2

UML Diagrams Wikipedia; “Unified Modeling Language, ” on-line at https: //en. wikipedia. org/wiki/Unified_Modeling_Language, accessed on 11 Dec 2016. 國立成功大學機械 程學系虛擬實境與多媒體研究室 2016/12/12 3

Class Diagram § In the diagram, classes are represented with boxes that contain three compartments – The top compartment contains the name of the class. It is printed in bold and centered, and the first letter is capitalized. – The middle compartment contains the attributes of the class. They are left-aligned and the first letter is lowercase. – The bottom compartment contains the operations the class can execute. They are also left-aligned and the first letter is lowercase. 國立成功大學機械 程學系虛擬實境與多媒體研究室 2016/12/12 4

Members Visibility § + : public § # : protected § - : private 國立成功大學機械 程學系虛擬實境與多媒體研究室 2016/12/12 5

Members § visibility name : type (= initial value) -str: char* -len: int = 4 -num_strings: int Static Member 用底線表示 國立成功大學機械 程學系虛擬實境與多媒體研究室 2016/12/12 6

Methods § visibility name ( arguments ): return type +queuecount(): int +dequeuer(item: Item&): bool 國立成功大學機械 程學系虛擬實境與多媒體研究室 2016/12/12 7

Constructor § <<constructor>> class_name (arguments) +<<constructor>>Brass(s : std: : string&, an : long, bal : double) +Brass(s : std: : string&, an : long, bal : double) 國立成功大學機械 程學系虛擬實境與多媒體研究室 2016/12/12 8

Inheritance (Generalization) § The generalization relationship is also known as the inheritance or "is a" relationship § 以空心三角形箭頭的實線表示 國立成功大學機械 程學系虛擬實境與多媒體研究室 2016/12/12 10

Aggregation § Aggregation is a variant of the "has a" association relationship § 以空心的菱形箭尾與實線來表示 國立成功大學機械 程學系虛擬實境與多媒體研究室 2016/12/12 11