Package jakarta.enterprise.lang.model.types

Interface WildcardType

All Superinterfaces:

AnnotationTarget, Type

public interface WildcardType
extends Type

A wildcard type. May have 3 forms:

• ? extends Number: has an upper bound
• ? super Number: has a lower bound
• ?: unbounded, has an implicit upper bound of java.lang.Object

Note that ? is equivalent to ? extends Object and is represented as such. Therefore, either upperBound() or lowerBound() always returns non-null.

Nested Class Summary

Nested classes/interfaces inherited from interface jakarta.enterprise.lang.model.types.Type

Type.Kind

Method Summary

Modifier and Type	Method	Description
default WildcardType	asWildcardType()	Returns this type as a wildcard type.
default Type.Kind	kind()	Returns the kind of this type.
Type	lowerBound()	Returns the lower bound of this wildcard type.
Type	upperBound()	Returns the upper bound of this wildcard type.

Methods inherited from interface jakarta.enterprise.lang.model.AnnotationTarget

annotation, annotations, annotations, hasAnnotation, hasAnnotation, repeatableAnnotation

Methods inherited from interface jakarta.enterprise.lang.model.types.Type

asArray, asClass, asDeclaration, asParameterizedType, asPrimitive, asType, asTypeVariable, asVoid, isArray, isClass, isDeclaration, isParameterizedType, isPrimitive, isType, isTypeVariable, isVoid, isWildcardType

Method Details

upperBound

Type upperBound()

Returns the upper bound of this wildcard type. Returns null if this wildcard type does not have an upper bound.

Returns:

upper bound of this wildcard type, or null if this wildcard type does not have an upper bound

lowerBound

Type lowerBound()

Returns the lower bound of this wildcard type. Returns null if this wildcard type does not have a lower bound.

Returns:

lower bound of this wildcard type, or null if this wildcard type does not have a lower bound

kind

default Type.Kind kind()

Description copied from interface: Type

Returns the kind of this type.

Specified by:

kind in interface Type

Returns:

the kind of this type

asWildcardType

default WildcardType asWildcardType()

Description copied from interface: Type

Returns this type as a wildcard type.

Specified by:

asWildcardType in interface Type

Returns:

this wildcard type, never null