How to write an annotation with members in PlantUML?

Question

I want to write an annotation with members in PlantUML. Specifically, I want to describe this Java code in PlantUML:

public @interface Foo {
    String bar();
    String baz();
}

I tried to write it in PlantUML, but it causes syntax error:

@startuml
annotation Foo {
    String bar()
    String baz()
}
@enduml

However, it's working when I omit the members:

@startuml
annotation Foo
@enduml

What should I do? Thanks.

question from:https://stackoverflow.com/questions/65931119/how-to-write-an-annotation-with-members-in-plantuml

Answer 1

In PlantUML, annotations can not have members (hence the syntax error).

To display a UML diagram for your code, you will need to use another solution, like adding the annotation as a separate entity:

@startuml
annotation interface

class Foo {
    String bar();
    String baz();
}


interface -- Foo
@enduml

Or include the annotation in the class name definition:

@startuml
class "@interface Foo" as Foo {
    String bar();
    String baz();
}
@enduml