About Question enthuware.ocpjp.ii.v11.2.3394 :

[Sergiy Romankov]

@interface Meals{
Meal[] value();
String course() ;
}

@Repeatable(Meals.class)
@interface Meal{

int id() default 0;
String name();
}

[Sergiy Romankov]

course() has no default value and there are no compilation error

[admin]

Please see section 9.6.3 of JLS 11:

...
An annotation type TC is a containing annotation type of T if all of the following are true:
1. TC declares a value() method whose return type is T[] .
2. Any methods declared by TC other than value() have a default value.
...

[Sergiy Romankov]

Well the question is which definitions of repeatable annotation is correct ?

[Sergiy Romankov]

@interface Meals{
Meal[] value();
String course() ;
}

@Repeatable(Meals.class)
@interface Meal{

int id() default 0;
String name();
}

@Meals(course = "", value = {@Meal(name="")})
public class Main {


}

And here is no problem

[admin]

@interface Meals{
Meal[] value();
String course() ;
}

@Repeatable(Meals.class)
@interface Meal{

int id() default 0;
String name();
}

@Meals(course = "", value = {@Meal(name="")})
public class Main {


}

And here is no problem

Well, JLS 9.6.3 is pretty clear that any methods declared by TC other than value() must have a default value in a containing annotation. So, if the above is working then I am not sure what we can do. I would go by the specification.

[admin]

Well the question is which definitions of repeatable annotation is correct ?

I see your point but in the given repeatable annotation there is a line @Repeatable(Meals.class). But if Meals is an invalid containing annotation, how can @Repeatable(Meals.class) be valid?

[Sergiy Romankov]

Thank you for answer