Module java.compiler
Package javax.lang.model.type

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 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