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Generics Question

Krishna doddi
Greenhorn

Joined: Oct 09, 2006
Posts: 14
public <T> List<T> meth(List<?> type)
{
System.out.println(type); // 1
return new ArrayList<String>(); // 2
}


Line 1 compiles fine.
Line 2 Fails. Reason : List Required

Cant we return a ArrayList where List is required???
I think we can return the subclass right.

Thanks
Siddharth


Sid<br />SCJP 1.5<br />SCBCD (Preparing....)
Keith Lynn
Ranch Hand

Joined: Feb 07, 2005
Posts: 2367
Actually the error message from the compiler is



It's not saying that you can't return an ArrayList.

It's saying it expects you to return a List whose elements are the type parameter T.
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: Generics Question