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

Problems with vectors

Sal Velinus
Greenhorn

Joined: Mar 05, 2002
Posts: 25
What's wrong with this vector/iterator code? When it was coded as an array, it was ok. Everything compiles ok till here:

Here's the error message:

Thanks.
Michael Yuan
author
Ranch Hand

Joined: Mar 07, 2002
Posts: 1427
Did you remember to import java.util.*?
Did you use JDK 1.2 and above?


Seam Framework: http://www.amazon.com/exec/obidos/ASIN/0137129394/mobileenterpr-20/
Ringful: http://www.ringful.com/
Sal Velinus
Greenhorn

Joined: Mar 05, 2002
Posts: 25
Ok, got it down to one error, but can't figure it out.

The error code now:

getSize() is a method defined in class MemoryChip, which is in the same package and which is referenced in several other places in this class w/o problem.
The vector here holds MemoryChip objects. My thinking is that (chip.next()) should refer to an element in the vector of type MemoryChip, and so return getSize(). Doesn't work. Thanks for the help.
[ April 03, 2002: Message edited by: Greg Adams ]
Valentin Crettaz
Gold Digger
Sheriff

Joined: Aug 26, 2001
Posts: 7610
Are you sure the case is correct?
In the compiler error, I see a getsize (lowercase 's') and you are talking about getSize (uppercase 's'). May that be the reason?


SCJP 5, SCJD, SCBCD, SCWCD, SCDJWS, IBM XML
[Blog] [Blogroll] [My Reviews] My Linked In
Michael Yuan
author
Ranch Hand

Joined: Mar 07, 2002
Posts: 1427
Your Iterator.next() method returns an "Object" type. You have to cast it back to "MemoryChip" before the compiler can check the "getsize()" method for you.
Try this:
totalRam += ((MemoryChip) chip.next()).getsize();
[ April 03, 2002: Message edited by: Michael Yuan ]
Sal Velinus
Greenhorn

Joined: Mar 05, 2002
Posts: 25
Thank you both, that cleared up the problem.
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: Problems with vectors