PlantUML: add notes on a link in class diagram

Following keywords are used to add notes on a link.

 

a.   note on link

b.   note left on link

c.    note right on link

d.   note top on link

e.   note bottom on link

 

Use above keywords just after the link definition.

 

Example

List <|.. AbstractList 
note on link #red: note that is red color

AbstractList <|-- ArrayList
note left on link #00FF00 
	note that is green color
end note

 

noteOnLinks.txt

@startuml

class List
class AbstractList
class ArrayList
class LinkedList
class Serializable

List <|.. AbstractList 
note on link #red: note that is red color

AbstractList <|-- ArrayList
note left on link #00FF00 
	note that is green color
end note

AbstractList <|-- LinkedList
note right on link #gold 
	note that is gold color
end note

Serializable <|.. ArrayList
note top on link #lightblue  
	note that is lightblue color
end note

Serializable <|.. LinkedList
note bottom on link #aqua  
	note that is aqua color
end note

@enduml

 Above snippet generate below diagram.

 

 

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