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

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WildcardTypejava.lang.reflect

Java 5.0

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 ( ); }