aspose file tools*
The moose likes Beginning Java and the fly likes Generics Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » Beginning Java
Bookmark "Generics " Watch "Generics " New topic
Author

Generics

Jon Camilleri
Ranch Hand

Joined: Apr 25, 2008
Posts: 660

"One of the notable features of Java generics is the erasure of generic types in the virtual
machine. Perhaps surprisingly, the erased classes still retain some faint memory of their
generic origin
"
Core Java Vol I (8th Ed) P. 641

Somehow this reminds me of weak references, is this correct?
Can we read this information somehow?

Related links?
1. Weak references
2. Understanding weak references


Jon
Jesper de Jong
Java Cowboy
Saloon Keeper

Joined: Aug 16, 2005
Posts: 14352
    
  22

No, this does not at all have anything to do with weak references.

Is there some more context in the book? (I don't have the book so I can't look it up).


Java Beginners FAQ - JavaRanch SCJP FAQ - The Java Tutorial - Java SE 8 API documentation
Stephan van Hulst
Bartender

Joined: Sep 20, 2010
Posts: 3649
    
  17

I assume it has to do with the fact that when you compile the code, the bytecode still knows that it is generic, so if you write new code that interacts with this compiled class, it will be able to perform type safety checks, as opposed to compiled code that used raw types. All the erasure actually takes place right before run time. This is when all generic information is discarded.
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: Generics