OpenJDK 27 · sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl

Modifier and Type	Field and Description
private final Type[]	actualTypeArguments
private final Type	ownerType
private final Class<?>	rawType

Access	Constructor and Description
private	ParameterizedTypeImpl(Class<?> rawType, Type[] actualTypeArguments, Type ownerType)

Method Summary

Modifier and Type	Method and Description
public boolean	equals(Object o) Overrides java.lang.Object.equals. Indicates whether some other object is "equal to" this one.
public Type[]	Returns: an array of `Type` objects representing the actual type arguments to this type getActualTypeArguments() Implements java.lang.reflect.ParameterizedType.getActualTypeArguments. Returns an array of `Type` objects representing the actual type arguments to this type.
public Type	Returns: a `Type` object representing the type that this type is a member of. If this type is a top-level type, `null` is returned getOwnerType() Implements java.lang.reflect.ParameterizedType.getOwnerType. Returns a `Type` object representing the type that this type is a member of.
public Class<?>	Returns: the `Type` object representing the class or interface that declared this type getRawType() Implements java.lang.reflect.ParameterizedType.getRawType. Returns the `Type` object representing the class or interface that declared this type.
public int	hashCode() Overrides java.lang.Object.hashCode. Returns a hash code value for this object.
public static ParameterizedTypeImpl	Returns: An instance of `ParameterizedType` make(Class<?> the Class representing the generic type declaration being instantiated rawType, Type[] a (possibly empty) array of types representing the actual type arguments to the parameterized type actualTypeArguments, Type the enclosing type, if known. ownerType) Static factory.
public String	toString() Overrides java.lang.Object.toString. Returns a string representation of the object.
private void	validateConstructorArguments()

Inherited from java.lang.Object:: clone finalize getClass notify notifyAll wait wait wait

actualTypeArguments	back to summary
private final Type[] actualTypeArguments

ownerType	back to summary
private final Type ownerType

rawType	back to summary
private final Class<?> rawType

ParameterizedTypeImpl	back to summary
private ParameterizedTypeImpl(Class<?> rawType, Type[] actualTypeArguments, Type ownerType)

Method Detail

equals back to summary

equals	back to summary
public boolean equals(Object o) Overrides java.lang.Object.equals. Doc from java.lang.Object.equals. Indicates whether some other object is "equal to" this one. The `equals` method implements an equivalence relation on non-null object references: It is reflexive: for any non-null reference value `x`, `x.equals(x)` should return `true`. It is symmetric: for any non-null reference values `x` and `y`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`. It is transitive: for any non-null reference values `x`, `y`, and `z`, if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`. It is consistent: for any non-null reference values `x` and `y`, multiple invocations of `x.equals(y)` consistently return `true` or consistently return `false`, provided no information used in `equals` comparisons on the objects is modified. For any non-null reference value `x`, `x.equals(null)` should return `false`. An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes. Annotations @Override

public boolean equals(Object o)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

It is reflexive: for any non-null reference value x, x.equals(x) should return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Annotations

@Override

getActualTypeArguments back to summary

getActualTypeArguments	back to summary
public Type[] getActualTypeArguments() Implements java.lang.reflect.ParameterizedType.getActualTypeArguments. Returns an array of `Type` objects 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:Type[] an array of `Type` objects representing the actual type arguments to this type Exceptions TypeNotPresentException: if any of the actual type arguments refers to a non-existent type declaration MalformedParameterizedTypeException: if any of the actual type parameters refer to a parameterized type that cannot be instantiated for any reason Since 1.5

public Type[] getActualTypeArguments()

Implements java.lang.reflect.ParameterizedType.getActualTypeArguments.

Returns an array of Type objects 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:Type[]

an array of Type objects representing the actual type arguments to this type

Exceptions

TypeNotPresentException:: if any of the actual type arguments refers to a non-existent type declaration
MalformedParameterizedTypeException:: if any of the actual type parameters refer to a parameterized type that cannot be instantiated for any reason

Since

1.5

getOwnerType back to summary

getOwnerType	back to summary
public Type getOwnerType() Implements java.lang.reflect.ParameterizedType.getOwnerType. Returns a `Type` object representing the type that this type is a member of. For example, if this type is `O<T>.I<S>`, return a representation of `O<T>`. If this type is a top-level type, `null` is returned. Returns:Type a `Type` object representing the type that this type is a member of. If this type is a top-level type, `null` is returned Exceptions TypeNotPresentException: if the owner type refers to a non-existent type declaration MalformedParameterizedTypeException: if the owner type refers to a parameterized type that cannot be instantiated for any reason

public Type getOwnerType()

Implements java.lang.reflect.ParameterizedType.getOwnerType.

Returns a Type object representing the type that this type is a member of. For example, if this type is O<T>.I<S>, return a representation of O<T>.

If this type is a top-level type, null is returned.

Returns:Type

a Type object representing the type that this type is a member of. If this type is a top-level type, null is returned

Exceptions

TypeNotPresentException:: if the owner type refers to a non-existent type declaration
MalformedParameterizedTypeException:: if the owner type refers to a parameterized type that cannot be instantiated for any reason

getRawType back to summary

getRawType	back to summary
public Class<?> getRawType() Implements java.lang.reflect.ParameterizedType.getRawType. Returns the `Type` object representing the class or interface that declared this type. Returns:Class<?> the `Type` object representing the class or interface that declared this type

public Class<?> getRawType()

Implements java.lang.reflect.ParameterizedType.getRawType.

Returns the Type object representing the class or interface that declared this type.

Returns:Class<?>: the Type object representing the class or interface that declared this type

hashCode back to summary

hashCode	back to summary
public int hashCode() Overrides java.lang.Object.hashCode. Doc from java.lang.Object.hashCode. Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by `java.util.HashMap`. The general contract of `hashCode` is: Whenever it is invoked on the same object more than once during an execution of a Java application, the `hashCode` method must consistently return the same integer, provided no information used in `equals` comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. If two objects are equal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce the same integer result. It is not required that if two objects are unequal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables. Annotations @Override

public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

Annotations

@Override

make back to summary

make	back to summary
public static ParameterizedTypeImpl make(Class<?> rawType, Type[] actualTypeArguments, Type ownerType) Static factory. Given a (generic) class, actual type arguments and an owner type, creates a parameterized type. This class can be instantiated with a raw type that does not represent a generic type, provided the list of actual type arguments is empty. If the ownerType argument is null, the declaring class of the raw type is used as the owner type. This method throws a MalformedParameterizedTypeException under the following circumstances: If the number of actual type arguments (i.e., the size of the array `typeArgs`) does not correspond to the number of formal type arguments. If any of the actual type arguments is not an instance of the bounds on the corresponding formal. Parameters rawType:Class<?> the Class representing the generic type declaration being instantiated actualTypeArguments:Type[] a (possibly empty) array of types representing the actual type arguments to the parameterized type ownerType:Type the enclosing type, if known. Returns:ParameterizedTypeImpl An instance of `ParameterizedType` Exceptions MalformedParameterizedTypeException: if the instantiation is invalid

public static ParameterizedTypeImpl make(Class<?> rawType, Type[] actualTypeArguments, Type ownerType)

Static factory. Given a (generic) class, actual type arguments and an owner type, creates a parameterized type. This class can be instantiated with a raw type that does not represent a generic type, provided the list of actual type arguments is empty. If the ownerType argument is null, the declaring class of the raw type is used as the owner type.

This method throws a MalformedParameterizedTypeException under the following circumstances: If the number of actual type arguments (i.e., the size of the array typeArgs) does not correspond to the number of formal type arguments. If any of the actual type arguments is not an instance of the bounds on the corresponding formal.

Parameters

rawType:Class<?>: the Class representing the generic type declaration being instantiated
actualTypeArguments:Type[]: a (possibly empty) array of types representing the actual type arguments to the parameterized type
ownerType:Type: the enclosing type, if known.

Returns:ParameterizedTypeImpl

An instance of ParameterizedType

Exceptions

MalformedParameterizedTypeException:: if the instantiation is invalid

toString back to summary

toString	back to summary
public String toString() Overrides java.lang.Object.toString. Doc from java.lang.Object.toString. Returns a string representation of the object. Satisfying this method's contract implies a non-`null` result must be returned.

public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object. Satisfying this method's contract implies a non-null result must be returned.

validateConstructorArguments	back to summary
private void validateConstructorArguments()

public Class ParameterizedTypeImpl

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