An annotation can have elements of an array type. The array type could be of one of the following types:
You need to specify the value for an array element inside braces.
Elements of the array are separated by a comma.
@interface ToDo {
String[] items();
}
The following code shows how to use a @ToDo annotation:
@ToDo(items={"a", "b"})
class Test {
}
To use only one element in the array, omit the braces. The following two annotation instances of the ToDo annotation type are equivalent:
@ToDo(items={"a"})
@ToDo(items="b")
To use empty array:
@ToDo(items={})
You cannot use a null reference as a value for an element in an annotation.