Can't find any logical explanation (JSP online store)

Hello,

I'm trying to re-work my last year's project about an online store. My project last year was working perfectly on university's labs but now I'm trying to run it on my machine and I have problems. Download and install Tomcat 6.0. My first JSP page loaded and presented fine but when I'm trying to move on to another page that using a JAVA class I have exceptions.

This is the error I have when I'm clicking on link for next page

An error occurred at line: 18 in the generated java file

Only a type can be imported. purchase.PurchaseManager resolves to a package


An error occurred at line: 19 in the generated java file

Only a type can be imported. purchase.Purchases resolves to a package


An error occurred at line: 29 in the jsp file: /Milestones/goodsList.jsp

PurchaseManager cannot be resolved to a type

26: NodeList nodeLogo = (NodeList) resultLogo;

27: String logoPath = nodeLogo.item(0).getTextContent();

28: 

[COLOR="#FF0000"]29[/COLOR]: PurchaseManager purchaseManager = new PurchaseManager("H:\\MadshopUsers\\purchase_"+session.getAttribute("Username")+".obj");

30: %>

31: 

32: <html>



An error occurred at line: 29 in the jsp file: /Milestones/goodsList.jsp

PurchaseManager cannot be resolved to a type

26: NodeList nodeLogo = (NodeList) resultLogo;

27: String logoPath = nodeLogo.item(0).getTextContent();

28: 

[COLOR="#FF0000"]29[/COLOR]: PurchaseManager purchaseManager = new PurchaseManager("H:\\MadshopUsers\\purchase_"+session.getAttribute("Username")+".obj");

30: %>

31: 

32: <html>

Now, when I'm trying to compile those classes, purchaseManager pointing errors where Purchases referred. First compiling the Purchases.java and I don't have problem, but when I'm compiling the purchaseManager.java I have "error:cannot find symbol" on 12 lines inside purchaseManager where Purchases element is created or Vector<Purchases>. At the end when I'm trying to compile them together "javac purchaseManager.java Purchases.java" I have no errors but these warnings,

Note: purchaseManager.java uses unchecked or not safe operations

Note: Recompile with -Xlint:unchecked for details

Can anyone tell me what's going wrong? I'm 100% sure that last year was working.

Thanks in advance,
toto_7

P.S. Tell me if you want and specific part of my code