This week's book giveaway is in the Big Data forum.
We're giving away four copies of Elasticsearch in Action and have Radu Gheorghe & Matthew Lee Hinman on-line!
See this thread for details.
The moose likes Java in General and the fly likes Generics & collections question Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of Elasticsearch in Action this week in the Big Data forum!
JavaRanch » Java Forums » Java » Java in General
Bookmark "Generics & collections question" Watch "Generics & collections question" New topic
Author

Generics & collections question

Thierry Henry
Greenhorn

Joined: Jun 20, 2007
Posts: 1
Hi,

i'm trying to create a type L that extends a List containing elements of type E.



I can't create an instance in the above example.. Anyone has some pointers or an example of how to go about this?
Jesper de Jong
Java Cowboy
Saloon Keeper

Joined: Aug 16, 2005
Posts: 14599
    
  24

If I'm not mistaken, this is unfortunately not possible, because of the way Java generics currently work (with type erasure).

See this from Angelika Langer's excellent Java Generics FAQ:
Can I create an object whose type is a type parameter?


Java Beginners FAQ - JavaRanch SCJP FAQ - The Java Tutorial - Java SE 8 API documentation
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: Generics & collections question