Interface WildcardType

All Superinterfaces:
AnnotatedConstruct, TypeMirror

public interface WildcardType
extends TypeMirror

Represents a wildcard type argument. Examples include:

?
   ? extends Number
   ? super T

A wildcard may have its upper bound explicitly set by an extends clause, its lower bound explicitly set by a super clause, or neither (but not both).

Since:
1.6

Methods

Modifier and Type Method and Description
TypeMirror getExtendsBound()

Returns the upper bound of this wildcard.

TypeMirror getSuperBound()

Returns the lower bound of this wildcard.

Methods inherited from interface javax.lang.model.type.TypeMirror

accept, equals, getKind, hashCode, toString

Methods inherited from interface javax.lang.model.AnnotatedConstruct

getAnnotation, getAnnotationMirrors, getAnnotationsByType

Methods

getExtendsBound

TypeMirror getExtendsBound()

Returns the upper bound of this wildcard. If no upper bound is explicitly declared, null is returned.

Returns:
the upper bound of this wildcard

getSuperBound

TypeMirror getSuperBound()

Returns the lower bound of this wildcard. If no lower bound is explicitly declared, null is returned.

Returns:
the lower bound of this wildcard

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https://docs.oracle.com/javase/8/docs/api/javax/lang/model/type/WildcardType.html