sun.reflect.generics.reflectiveObjects
Class ParameterizedTypeImpl

java.lang.Object
  sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl

All Implemented Interfaces:

ParameterizedType, Type

public class ParameterizedTypeImpl
extends Object
implements ParameterizedType

Implementing class for ParameterizedType interface.

Method Summary

boolean	equals(Object o) equals compares this object to another object.
Type[]	getActualTypeArguments() Returns an array of Type objects representing the actual type arguments to this type.
Type	getOwnerType() Returns a Type object representing the type that this type is a member of.
Class<?>	getRawType() Returns the Type object representing the class or interface that declared this type.
int	hashCode() hashCode returns a hash code for this object.
static ParameterizedTypeImpl	make(Class<?> rawType, Type[] actualTypeArguments, Type ownerType) Static factory.
String	toString() toString creates a printable string that represents this object for debugging purposes.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

make

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 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 - the Class representing the generic type declaration being instantiated

actualTypeArguments - - a (possibly empty) array of types representing the actual type arguments to the parameterized type

ownerType - - the enclosing type, if known.

Returns:

An instance of ParameterizedType

Throws:

MalformedParameterizedTypeException - - if the instantiation is invalid

getActualTypeArguments

public Type[] 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.

Specified by:

getActualTypeArguments in interface ParameterizedType

Returns:

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

Throws:

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

getRawType

public Class<?> getRawType()

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

Specified by:

getRawType in interface ParameterizedType

Returns:

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

getOwnerType

public Type getOwnerType()

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

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

Specified by:

getOwnerType in interface ParameterizedType

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

Throws:

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

equals

public boolean equals(Object o)

Description copied from class: Object

equals compares this object to another object.

Equals must be symmetric (a.equals(b) == b.equals(a)), reflexive (a.equals(a)==true) and transitive (a.equals(b) && b.equals(c) IMPLIES (a.equals(c))) and not change over time (a.equals(b) == a.equals(b)). a.equals(null) should always return false.

If a.equals(b) is true for two objects a and b, then a.hashCode()==b.hashCode() must hold.

The default implementation of equals returns this==other.

Overrides:

equals in class Object

Parameters:

o - the other object.

Returns:

if this and other are considered equal.

hashCode

public int hashCode()

Description copied from class: Object

hashCode returns a hash code for this object. The hash code must be equal for two objects a and b if a.equals(b) is true.

The default implementation returns System.identityHashCode(this).

Overrides:

hashCode in class Object

Returns:

a hash code value.

toString

public String toString()

Description copied from class: Object

toString creates a printable string that represents this object for debugging purposes.

The default implementation returns getClass().getName() + '@' + Integer.toHexString(hashCode()).

Overrides:

toString in class Object

Returns:

a string identifying this object.