Java in a Nutshell, 5th Edition [Electronic resources] نسخه متنی

This
interface extends Type and represents a generic
type declared with a bounded or unbounded wildcard.
getUpperBounds(
) returns the upper bounds of the
wildcard. The returned array always includes at least one element. If
no upper bound is declared, Object.class is the
implicit upper bound. getLowerBounds(
) returns the lower bounds of the
wildcard. If no lower bound is declared, this method returns an

empty
array
.

Figure 10-104. java.lang.reflect.WildcardType

public interface

WildcardType extends Type {
// Public Instance Methods
Type[ ]

getLowerBounds ( );
Type[ ]

getUpperBounds ( );
}