WildcardType (Jakarta EE Platform API)

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

All Methods Instance Methods Abstract Methods Default Methods
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 Detail
  - 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