Java developers

Hi everyone, I'd be new to community, and fairly new to Java.
I'm a 2nd Year BSc Computing Science student at University here in London (UK), and I'm stuck with one little problem on a project program I'm writing, and I was wondering if anyone could offer some advice on how I could go about rectifying my problem.

I've had to write a Share managing program, where information on each share is stored in a custom class object called ShareInPortfolio which is then stored into a vector. My problem is that when I try to get an element of the vector so I can alter variables inside ShareInPortfolio (through accessor and mutator methods defined in the class), the JDK is telling me that it is finding a Java.lang.Object where ShareInPortfolio is required.
Any advice on what I might be doing wrong would be much appreciated.
The project's due in tomorrow, and I've got it all but finished... except for this error - but I don't have to submit a working program. I can submit incomplete code as long as I say what it should be doing in the places it doesn't work.
I'm just a perfectionist and would ideally like to submit it working if I can.

Hi, Java gurus!

Our company is creating a library and thus a good advice about the contents of the library is needed. The main area of activites is j2ee (full spectrum) but it would be nice to have other areas covered as well. I.e. general CS. There are already some ideas as what to buy (in addition to what already exists), but a good advice from this experienced community is very welcome :)

UPDATE: If you are interested in what we have chosen, here is a list of books (not too final though):
( a pretty long list of booksCollapse )

I made this list to give a better platform to students for learning java.

Here is the address for java beginner list
http://info.pakishop.com/mailman/listinfo/java

if anyone wants to subscribe
LIST usage

First become a member by subscribing list at http://info.pakishop.com/mailman/listinfo/java
you will get a mail for conformation which might be get in yours junk mail folder if you are using yahoo or hotmail . so tell your server that this not a junk mail, conform your subscription and then mail your problem or a solution to java@info.pakishop.com


TIP
It will work very fast

IMPORTANT
i am using a dynamic ip so i cant point my mx record to A record that is why yahoo or msn will think the list´s mail as a junk mail so you will have to check your junk mail and mark the mail as this is not a junk mail, after you subscribe to the list.