public class

TypeVariableImpl

extends LazyReflectiveObjectGenerator
implements TypeVariable<D extends GenericDeclaration>
java.lang.Object
   ↳ sun.reflect.generics.reflectiveObjects.LazyReflectiveObjectGenerator
     ↳ sun.reflect.generics.reflectiveObjects.TypeVariableImpl<D extends java.lang.reflect.GenericDeclaration>

Class Overview

Implementation of java.lang.reflect.TypeVariable interface for core reflection.

Summary

Public Methods
boolean equals(Object o)
Indicates whether some other object is "equal to" this one.
Type[] getBounds()
Returns an array of Type objects representing the upper bound(s) of this type variable.
D getGenericDeclaration()
Returns the GenericDeclaration object representing the generic declaration that declared this type variable.
String getName()
Returns the name of this type variable, as it occurs in the source code.
int hashCode()
Returns a hash code value for the object.
static <T extends GenericDeclaration> TypeVariableImpl<T> make(T decl, String name, FieldTypeSignature[] bs, GenericsFactory f)
Factory method.
String toString()
Returns a string representation of the object.
[Expand]
Inherited Methods
From class sun.reflect.generics.reflectiveObjects.LazyReflectiveObjectGenerator
From class java.lang.Object
From interface java.lang.reflect.TypeVariable

Public Methods

public boolean equals (Object o)

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.

The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values x and y, this method returns true if and only if x and y refer to the same object (x == y has the value true).

Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.

Parameters
o the reference object with which to compare.
Returns
  • true if this object is the same as the obj argument; false otherwise.

public Type[] getBounds ()

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 #ParameterizedType for the details of the creation process for parameterized types).
  • Otherwise, B is resolved.

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

public D getGenericDeclaration ()

Returns the GenericDeclaration object representing the generic declaration that declared this type variable.

Returns
  • the generic declaration that declared this type variable.

public String getName ()

Returns the name of this type variable, as it occurs in the source code.

Returns
  • the name of this type variable, as it appears in the source code

public int hashCode ()

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

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(Object) 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(java.lang.Object) 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 hashtables.

As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the JavaTM programming language.)

Returns
  • a hash code value for this object.

public static TypeVariableImpl<T> make (T decl, String name, FieldTypeSignature[] bs, GenericsFactory f)

Factory method.

Parameters
decl - the reflective object that declared the type variable that this method should create
name - the name of the type variable to be returned
bs - an array of ASTs representing the bounds for the type variable to be created
f - a factory that can be used to manufacture reflective objects that represent the bounds of this type variable
Returns
  • A type variable with name, bounds, declaration and factory specified

public String toString ()

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

 getClass().getName() + '@' + Integer.toHexString(hashCode())
 

Returns
  • a string representation of the object.