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

Interface TypeVariable

All Superinterfaces:
AnnotatedConstruct, ReferenceType, TypeMirror
public interface TypeVariable extends ReferenceType
Represents a type variable. A type variable may be explicitly declared by a type parameter of a type, method, or constructor. A type variable may also be declared implicitly, as by the capture conversion of a wildcard type argument (see chapter 5 of The Java Language Specification).
See Java Language Specification:
4.4 Type Variables
Since:
1.6
See Also:

  • Method Details

    • asElement

      Element asElement()
      Returns the element corresponding to this type variable.
      Returns:
      the element corresponding to this type variable

    • getUpperBound

      TypeMirror getUpperBound()
      Returns the upper bound of this type variable.

      If this type variable was declared with no explicit upper bounds, the result is java.lang.Object. If it was declared with multiple upper bounds, the result is an intersection type; individual bounds can be found by examining the result's bounds.

      Returns:
      the upper bound of this type variable
      See Java Language Specification:
      4.9 Intersection Types

    • getLowerBound

      TypeMirror getLowerBound()
      Returns the lower bound of this type variable. While a type parameter cannot include an explicit lower bound declaration, capture conversion can produce a type variable with a non-trivial lower bound. Type variables otherwise have a lower bound of NullType.
      Returns:
      the lower bound of this type variable
      See Java Language Specification:
      18.1.3. Bounds