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WildcardType.javaAPI DocJava SE 5 API2535Fri Aug 26 14:57:06 BST 2005java.lang.reflect

WildcardType

public interface WildcardType implements Type
WildcardType represents a wildcard type expression, such as ?, ? extends Number, or ? super Integer.
since
1.5

Fields Summary
Constructors Summary
Methods Summary
public java.lang.reflect.Type[]getLowerBounds()
Returns an array of Type objects representing the lower bound(s) of this type variable. Note that if no lower bound is explicitly declared, the lower bound is the type of null. In this case, a zero length array is returned.

For each lower bound B :

  • if B is a parameterized type or a type variable, it is created, (see {@link java.lang.reflect.ParameterizedType ParameterizedType} for the details of the creation process for parameterized types).
  • Otherwise, B is resolved.

return
an array of Types representing the lower bound(s) of this type variable
throws
TypeNotPresentException if any of the bounds refers to a non-existent type declaration
throws
MalformedParameterizedTypeException if any of the bounds refer to a parameterized type that cannot be instantiated for any reason

public java.lang.reflect.Type[]getUpperBounds()
Returns an array of Type objects representing the upper bound(s) of this type variable. Note that if no upper bound is explicitly declared, the upper bound is Object.

For each upper bound B :

  • if B is a parameterized type or a type variable, it is created, (see {@link java.lang.reflect.ParameterizedType ParameterizedType} for the details of the creation process for parameterized types).
  • Otherwise, B is resolved.

return
an array of Types representing the upper bound(s) of this type variable
throws
TypeNotPresentException if any of the bounds refers to a non-existent type declaration
throws
MalformedParameterizedTypeException if any of the bounds refer to a parameterized type that cannot be instantiated for any reason