Jere,
I think Mike's right. Also, Java doesn't support operator overloading.
Michael
Michael Nash wrote:
> Jere:
>
> You must do an explicit cast, as yout error suggests, because the getValue
> is returning a "generic" Object - it doesn't know it's a cartitem.
>
> If you say:
> B = (cartitem) session.getValue(A.getName());
>
> you should be OK I think.
>
> And I think you might be looking for something like an "equals" method
> rather than an overloaded operator, depending on what you're doing. (I'm
> doing a shopping cart as well, among other stuff, BTW)
>
> Mike Nash
>
> -----Original Message-----
> From: Jere Robinson [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, April 20, 1999 6:30 AM
> To: [EMAIL PROTECTED]
> Subject: [Fwd: session getValue question]
>
> Jere Robinson wrote:
> >
> > Hey guys, little 'ol me has been put on as head of my ISP's Java Servlet
> > shopping cart project. I have a question about the HttpSession method
> > getValue. It is supposed to return the object to which the String value
> > parameter (name) points, but when I try the following:
> >
> > cartitem A = new cartitem();
> > A.putName("Bar of Soap");
> > A.putPrice(150);
> > A.putQuantity(1);
> >
> > session.putValue(A.getName(),A);
> > cartitem B = new cartitem();
> > B = session.getValue(A.getName());
> >
> > It chokes on ' B = session.getValue(A.getName()); ' at compile time,
> > telling me I need to cast it:
> >
> > CartTest.java:31: Incompatible type for =. Explicit cast needed to
> > convert java.lang.Object to cartitem.
> > B = session.getValue(A.getName());
> > ^
> > What do I need to get this to work?
> > Oh, I need to overload the = operator in my cartitem class, don't I?
> > I'll send this in case I'm going down the wrong path. Even if I'm
> > right, how do we overload operators in Java?
> >
> > Thanks in advance!
> > Jere
>
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