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package javax.lang.model.type;


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).

Author:Joseph D. Darcy, Scott Seligman, Peter von der Ahé
@jls4.5.1 Type Arguments of Parameterized Types
Since:1.6
/** * Represents a wildcard type argument. * Examples include: <pre><code> * ? * ? extends Number * ? super T * </code></pre> * * <p> A wildcard may have its upper bound explicitly set by an * {@code extends} clause, its lower bound explicitly set by a * {@code super} clause, or neither (but not both). * * @author Joseph D. Darcy * @author Scott Seligman * @author Peter von der Ah&eacute; * @jls 4.5.1 Type Arguments of Parameterized Types * @since 1.6 */
public interface WildcardType extends TypeMirror {
{@return the upper bound of this wildcard} If no upper bound is explicitly declared, null is returned.
/** * {@return the upper bound of this wildcard} * If no upper bound is explicitly declared, * {@code null} is returned. */
TypeMirror getExtendsBound();
{@return the lower bound of this wildcard} If no lower bound is explicitly declared, null is returned.
/** * {@return the lower bound of this wildcard} * If no lower bound is explicitly declared, * {@code null} is returned. */
TypeMirror getSuperBound(); }