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).
- See Java Language Specification:
- 4.5.1 Type Arguments of Parameterized Types
- Since:
- 1.6
Method Summary
| Modifier and Type | Method | Description |
|---|---|---|
TypeMirror |
getExtendsBound() |
Returns the upper bound of this wildcard. |
TypeMirror |
getSuperBound() |
Returns the lower bound of this wildcard. |
Methods declared in interface javax.lang.model.type.TypeMirror
accept, equals, getAnnotation, getAnnotationMirrors, getAnnotationsByType, getKind, hashCode, toString
Method Details
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/en/java/javase/17/docs/api/java.compiler/javax/lang/model/type/WildcardType.html