Java™ Platform
Standard Ed. 6

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 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).

Since:
1.6
See Also:
TypeParameterElement

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 interface javax.lang.model.type.TypeMirror
accept, equals, getKind, hashCode, toString
 

Method Detail

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 (modeled as a DeclaredType). Individual bounds can be found by examining the result's supertypes.

Returns:
the upper bound of this type variable

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

Java™ Platform
Standard Ed. 6

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For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2008 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.


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