Vladimir Tsvetkov wrote:
What you try to do is not a valid operation in type-safe language as
Java.
You can't convert Coll to Coll<ItemType>,
but you can cast Coll<?> to Coll<Whatever>.
Don't know if this is OK with the problem you're trying to solve
Merry Christmas!
On Fri, Dec 26, 2008 at 4:20 PM, Frank Staals <franksta...@gmx.net
<mailto:franksta...@gmx.net>> wrote:
Not realy a FreeBSD-specific question but I was not sure where I
could find what I was looking for elseware (Googling did not
manage to dig up much info):
The problem:
I want to set the type of objects some Collection object holds on
runtime. In other wors I have an object C with: C extends
AbstractCollection, I have the Class object T specifying what type
of objects C should hold and I have a method M which takes a C<T>
as an argument. I made a generic version of C (without the type)
and now I have to set it so it can only carry objects of type T.
Does anyone know how to do this ?
Information in programming style:
C extends AbstractCollection myCollection;
Class itemType;
public void myMethod(C<itemType> myCollectionArgument)
How do I convert myCollection from being a C to a C<itemType> on
runtime so I can call myMethod(myCollection) ?
I hope the explanation of my problem makes sense and someone can
help me.
Regards,
--
- Frank
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Whell just after I posted my mail to this list I realized that I may
have fogotten to mention something:
I want to do the 'conversion' because the myCollection Collection is
still empty. So in other words I want to create a new collection and
fill it. However I do not know the type
of the items I want to put in beforehand so it has to occur dynamically.
So an equivalent question may be: How do I create a new 'C extends
AbstractCollection<itemType>' using reflection ?
--
- Frank
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