Loading...

XML

Word

Printable

Type: Enhancement
Resolution: Other
Priority: P4
Fix Version/s: None
Affects Version/s: None
Component/s: specification
Labels:
- webbug

Subcomponent:
language

Type parameters were added to the Java programming language in the 1.5 release. While core reflection was updated to provide information about the generic type information, only structural information is provided. That is, core reflection can tell you that a method in a class has a generic return type and that a class has a type variable. However, core reflection cannot tell you that a particular Set object is a Set<String> or Set<Number> instead of just a Set. Currently, such information is not available at runtime because generics in Java and implemented via erasure; roughtly speaking javac transforms a generic Java program to a non-generic program with casts. Reification would make the type variable information available at runtime too; that information would be useful for certain programming idioms.

duplicates

JDK-5094290 Inaccurate warning for a return value from an incomplete parameterized class

Closed

JDK-5105887 There should be way to create generic arrays without warnings or errors

Closed

JDK-6193717 Spurious "unchecked conversion" Xlint warning under certain conditions

Closed

JDK-6213099 Generic Types are Not Verified Correctly

Closed

JDK-8244074 Using newInstance constructor breaks type safety

Closed

JDK-4708394 generics specification breaks exception checking

Closed

JDK-5041645 Request Parameterized class ".class" Syntax

Closed

JDK-5092105 classes with generic members can't specialize readObject() without a warning

Closed

JDK-5098073 (reflect) No method to get actual type parameters for generics

Closed

JDK-5107292 Generic array initialization expressions are impossible

Closed

JDK-6197797 Inconsistent templates for toArray() in java.util

Closed

JDK-6255821 Make Java Generics first class objects.

Closed

JDK-6351601 Can't deserialize object collections without "unchecked cast" warnings

Closed

JDK-6442437 Allow reference to .class from generelized type identifier

Closed

JDK-6463234 Obtaining the class of a generic type

Closed

JDK-6542176 New static castType method as an alternative for @SuppressWarnings("unchecked")

Closed

JDK-6545897 Support reified generics

Closed

JDK-7074966 Allow the creation of Generic type Arrays

Closed

JDK-5016825 Allow creating a new instance of a generic type

Closed

JDK-5099091 Make the parameter type available from a generic instance

Closed

JDK-6397444 Support for Generic arrays

Closed

relates to

JDK-5060257 please change return type of Iterable<T>.iterator() to Iterator<? extends T>

Closed

JDK-6422403 Bean introspection does not correctly calculate types of inherited properties

Closed

JDK-6775110 Reference method ambiguous on overrided protected method w. generic params

Closed

JDK-8173884 Runtime Generic cast issue

Closed

JDK-6546865 Support reified generics in Hotspot

Closed

JDK-8241821 Need higher quality runtime reflection data

Closed

JDK-6512103 Annotation-qualified optional disallowance of raw generic types

Closed

JDK-6559172 Unchecked warning required for checked assignment

Closed

(16 duplicates, 8 relates to)

Assignee:: Alex Buckley

Reporter:: Joe Darcy

Votes:: 0 Vote for this issue

Watchers:: 8 Start watching this issue

Created:: 2004-09-07 16:08

Updated:: 2020-04-29 09:26

Resolved:: 2014-10-17 16:45

Details

Description

Attachments

Issue Links

Activity

People

Dates