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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
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;
 * @since 1.6
 */
public interface WildcardType extends TypeMirror {

    
Returns the upper bound of this wildcard. If no upper bound is explicitly declared, null is returned. 
Returns:
the upper bound of this wildcard/**
     * Returns the upper bound of this wildcard.
     * If no upper bound is explicitly declared,
     * {@code null} is returned.
     *
     * @return the upper bound of this wildcard
     */
    TypeMirror getExtendsBound();

    
Returns the lower bound of this wildcard. If no lower bound is explicitly declared, null is returned. 
Returns:
the lower bound of this wildcard/**
     * Returns the lower bound of this wildcard.
     * If no lower bound is explicitly declared,
     * {@code null} is returned.
     *
     * @return the lower bound of this wildcard
     */
    TypeMirror getSuperBound();
}