ParameterizedType (Java Platform SE 8 )
source link: https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/ParameterizedType.html
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Interface ParameterizedType
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All Superinterfaces:
Type
public interface ParameterizedType extends Type
ParameterizedType represents a parameterized type such as Collection<String>.
A parameterized type is created the first time it is needed by a reflective method, as specified in this package. When a parameterized type p is created, the generic type declaration that p instantiates is resolved, and all type arguments of p are created recursively. See
TypeVariablefor details on the creation process for type variables. Repeated creation of a parameterized type has no effect.Instances of classes that implement this interface must implement an equals() method that equates any two instances that share the same generic type declaration and have equal type parameters.
Since:
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Method Summary
All MethodsInstance MethodsAbstract Methods Modifier and Type Method and DescriptionType[]getActualTypeArguments()Returns an array ofTypeobjects representing the actual type arguments to this type.Returns aTypeobject representing the type that this type is a member of.Returns theTypeobject representing the class or interface that declared this type.-
Methods inherited from interface java.lang.reflect.Type
getTypeName
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Method Detail
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getActualTypeArguments
Type[]Â getActualTypeArguments()
Returns an array of
Typeobjects representing the actual type arguments to this type.Note that in some cases, the returned array be empty. This can occur if this type represents a non-parameterized type nested within a parameterized type.
Returns: an array of
Typeobjects representing the actual type arguments to this type Throws:TypeNotPresentException- if any of the actual type arguments refers to a non-existent type declarationMalformedParameterizedTypeException- if any of the actual type parameters refer to a parameterized type that cannot be instantiated for any reason Since:
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getRawType
Type getRawType()
Returns theTypeobject representing the class or interface that declared this type.Returns: the
Typeobject representing the class or interface that declared this type Since:
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getOwnerType
Type getOwnerType()
Returns a
Typeobject representing the type that this type is a member of. For example, if this type isO<T>.I<S>, return a representation ofO<T>.If this type is a top-level type,
nullis returned.Returns: a
Typeobject representing the type that this type is a member of. If this type is a top-level type,nullis returned Throws:TypeNotPresentException- if the owner type refers to a non-existent type declarationMalformedParameterizedTypeException- if the owner type refers to a parameterized type that cannot be instantiated for any reason Since:
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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