Mermaidでクラス図を書く

code:mermaid

class BankAccount

BankAccount : +String owner

BankAccount : +Bigdecimal balance

BankAccount : +deposit(amount)

BankAccount : +withdrawal(amount)

https://gyazo.com/c68175e16461aed5ec6cf4afddf7398b

class名

property

method

classの定義方法は2種類

明示的に定義する

code:mermaid

class Animal

まず関係を書いちゃう

code:mermaid

Vehicle <|-- Car

property,methodの紐付け方は2種類

出力は同じ

classとpropetyの定義を一緒に書く

記述量が少ない

code:mermaid

class BankAccount{

+String owner

+withdrawal(amount)

}

classの定義と、propertyの定義を別の場所にかける

code:mermaid

class BankAccount

BankAccount : +String owner

BankAccount : +withdrawal(amount)

型の書き方

返り値の型

code:mermaid

class BankAccount{

+String owner

+withdrawal(amount) int

}

generics

Visiblity

+ Public

- Private

# Protected

~ Package/Internal

関係

関係にラベルを付ける

code:mermaid

classA --|> classB : 継承

双方この関係

table:-

<| Inheritance

* Composition

o Aggregation

Association

< Association

|> Realization

1

0..1

1..*

*

n

0..n

1..n

code:mermaid

Customer "1" --> "*" Ticket

Student "1" --> "1..*" Course

Galaxy --> "many" Star : Contains

enum

code:mermaid

class Color{

<<enumeration>>

RED

BLUE

GREEN

WHITE

BLACK

}