TypeVariable (Java Platform SE 6)

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javax.lang.model.type
interface TypeVariable

All Superinterfaces:: ReferenceType, TypeMirror

public interface TypeVariable
extends ReferenceType

Represents a type variable. A type variable may be explicitly declared by a {@linkplain TypeParameterElement 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, Third Edition).

Method Summary
`Element`	`asElement()` Returns the element corresponding to this type variable.
`TypeMirror`	`getLowerBound()` Returns the lower bound of this type variable.
`TypeMirror`	`getUpperBound()` Returns the upper bound of this type variable.

Methods inherited from class javax.lang.model.type.TypeMirror
`accept, equals, getKind, hashCode, toString`

Method Detail

asElement

public Element asElement()

Returns the element corresponding to this type variable.

Returns:: the element corresponding to this type variable

getLowerBound

public 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 {@link NullType}.

Returns:: the lower bound of this type variable

getUpperBound

public TypeMirror getUpperBound()

Returns the upper bound of this type variable.

If this type variable was declared with no explicit upper bounds, the result is {@code java.lang.Object}. If it was declared with multiple upper bounds, the result is an intersection type (modeled as a {@link DeclaredType}). Individual bounds can be found by examining the result's {@linkplain Types#directSupertypes(TypeMirror) supertypes}.

Returns:: the upper bound of this type variable