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Android APIs
Added in API level 1
public interface

WildcardType

implements Type
java.lang.reflect.WildcardType

Class Overview

A pattern type, such as the upper bounded wildcard ? extends Closeable or the lower bounded wildcard ? super String .

Although this interface permits an arbitrary number of upper and lower bounds, all wildcard types of Java language programs are in one of two forms:

  1. No lower bound and one upper bound. Such types are written like ? extends java.lang.Number . When the upper bound is java.lang.Object , the extends java.lang.Object suffix is optional: Set is shorthand for Set .
  2. One lower bound and an upper bound of java.lang.Object . Such types are written like ? super java.lang.String .

Summary

Public Methods
abstract Type[] getLowerBounds ()
Returns the array of types that represent the lower bounds of this type.
abstract Type[] getUpperBounds ()
Returns the array of types that represent the upper bounds of this type.

Public Methods

public abstract Type[] getLowerBounds ()

Added in API level 1

Returns the array of types that represent the lower bounds of this type. The default lower bound is null , in which case an empty array is returned. Since only one lower bound is allowed, the returned array's length will never exceed one.

Returns
  • an array containing the lower bounds types
Throws
TypeNotPresentException if any of the bounds points to a missing type
MalformedParameterizedTypeException if any of the bounds points to a type that cannot be instantiated for some reason

public abstract Type[] getUpperBounds ()

Added in API level 1

Returns the array of types that represent the upper bounds of this type. The default upper bound is Object .

Returns
  • an array containing the upper bounds types
Throws
TypeNotPresentException if any of the bounds points to a missing type
MalformedParameterizedTypeException if any bound points to a type that cannot be instantiated for some reason