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WildcardType
interface WildcardType : Type
WildcardType represents a wildcard type expression, such as ?, ? extends Number, or ? super Integer.
Summary
| Public methods |
| abstract Array<Type!> |
Returns an array of Type objects representing the lower bound(s) of this type variable.
|
| abstract Array<Type!> |
Returns an array of Type objects representing the upper bound(s) of this type variable.
|
| Inherited functions |
From class Type
String |
getTypeName()
Returns a string describing this type, including information about any type parameters.
|
|
Public methods
getLowerBounds
abstract fun getLowerBounds(): Array<Type!>
Returns an array of Type objects representing the lower bound(s) of this type variable. 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
ParameterizedType for the details of the creation process for parameterized types).
- Otherwise, B is resolved.
| Return |
Array<Type!> |
an array of Types representing the lower bound(s) of this type variable |
| Exceptions |
java.lang.TypeNotPresentException |
if any of the bounds refers to a non-existent type declaration |
java.lang.reflect.MalformedParameterizedTypeException |
if any of the bounds refer to a parameterized type that cannot be instantiated for any reason |
getUpperBounds
abstract fun getUpperBounds(): Array<Type!>
Returns an array of Type objects representing the upper bound(s) of this type variable. 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
ParameterizedType for the details of the creation process for parameterized types).
- Otherwise, B is resolved.
| Return |
Array<Type!> |
an array of Types representing the upper bound(s) of this type variable |
| Exceptions |
java.lang.TypeNotPresentException |
if any of the bounds refers to a non-existent type declaration |
java.lang.reflect.MalformedParameterizedTypeException |
if any of the bounds refer to a parameterized type that cannot be instantiated for any reason |
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Last updated 2025-02-10 UTC.
[null,null,["Last updated 2025-02-10 UTC."],[],[],null,["# WildcardType\n\nAdded in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)\n\nWildcardType\n============\n\n```\ninterface WildcardType : Type\n```\n\n|-------------------------------------|\n| [java.lang.reflect.WildcardType](#) |\n\nWildcardType represents a wildcard type expression, such as `?`, `? extends Number`, or `? super Integer`.\n\nSummary\n-------\n\n| Public methods ||\n|----------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------|\n| abstract [Array](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-array/index.html)\\\u003c[Type](/reference/kotlin/java/lang/reflect/Type)!\\\u003e | [getLowerBounds](#getLowerBounds())`()` Returns an array of `Type` objects representing the lower bound(s) of this type variable. |\n| abstract [Array](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-array/index.html)\\\u003c[Type](/reference/kotlin/java/lang/reflect/Type)!\\\u003e | [getUpperBounds](#getUpperBounds())`()` Returns an array of `Type` objects representing the upper bound(s) of this type variable. |\n\n| Inherited functions ||\n|---|---|\n| From class [Type](/reference/kotlin/java/lang/reflect/Type) |----------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | [getTypeName](/reference/kotlin/java/lang/reflect/Type#getTypeName())`()` Returns a string describing this type, including information about any type parameters. \u003cbr /\u003e | ||\n\nPublic methods\n--------------\n\n### getLowerBounds\n\nAdded in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nabstract fun getLowerBounds(): Array\u003cType!\u003e\n```\n\nReturns an array of `Type` objects representing the lower bound(s) of this type variable. If no lower bound is explicitly declared, the lower bound is the type of `null`. In this case, a zero length array is returned.\n\nFor each lower bound B :\n\n- if B is a parameterized type or a type variable, it is created, (see [ParameterizedType](/reference/kotlin/java/lang/reflect/ParameterizedType) for the details of the creation process for parameterized types).\n- Otherwise, B is resolved.\n\n| Return ||\n|-----------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------|\n| [Array](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-array/index.html)\u003c[Type](/reference/kotlin/java/lang/reflect/Type)!\u003e | an array of Types representing the lower bound(s) of this type variable |\n\n| Exceptions ||\n|---------------------------------------------------------|-----------------------------------------------------------------------------------------------|\n| `java.lang.TypeNotPresentException` | if any of the bounds refers to a non-existent type declaration |\n| `java.lang.reflect.MalformedParameterizedTypeException` | if any of the bounds refer to a parameterized type that cannot be instantiated for any reason |\n\n### getUpperBounds\n\nAdded in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nabstract fun getUpperBounds(): Array\u003cType!\u003e\n```\n\nReturns an array of `Type` objects representing the upper bound(s) of this type variable. If no upper bound is explicitly declared, the upper bound is `Object`.\n\nFor each upper bound B :\n\n- if B is a parameterized type or a type variable, it is created, (see [ParameterizedType](/reference/kotlin/java/lang/reflect/ParameterizedType) for the details of the creation process for parameterized types).\n- Otherwise, B is resolved.\n\n| Return ||\n|-----------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------|\n| [Array](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-array/index.html)\u003c[Type](/reference/kotlin/java/lang/reflect/Type)!\u003e | an array of Types representing the upper bound(s) of this type variable |\n\n| Exceptions ||\n|---------------------------------------------------------|-----------------------------------------------------------------------------------------------|\n| `java.lang.TypeNotPresentException` | if any of the bounds refers to a non-existent type declaration |\n| `java.lang.reflect.MalformedParameterizedTypeException` | if any of the bounds refer to a parameterized type that cannot be instantiated for any reason |"]]
