Re: tomcat classloader

From:

"Mike Schilling" <mscottschilling@hotmail.com>

Newsgroups:

comp.lang.java.programmer

Date:

Wed, 9 Jun 2010 08:10:30 -0700

Message-ID:

<huoat8$b3u$1@news.eternal-september.org>

"Alessio Stalla" <alessiostalla@gmail.com> wrote in message
news:96618c26-6576-4673-9f64-932af68bece5@e5g2000yqn.googlegroups.com...

On Jun 9, 5:05 am, "Mike Schilling" <mscottschill...@hotmail.com>
wrote:

"Pif - 34" <f...@nospam.fr> wrote in
messagenews:4c0ab15e$0$32742$426a34cc@news.free.fr...

I've replaced " Class.forName("oracle.jdbc.driver.OracleDriver"); "
by oracle.jdbc.driver.OracleDriver oracleDriver = null;

and this works perfectly. So my Jar is well placed, this seems to be an
error with the ClassLoader of tomcat !?

If that's a local variable, I'm not sure it causes the class to be
loaded.

If I'm not mistaken, the class should be loaded because it's
referenced in the constant pool, but it will be "initialized" only
when you access it in some way (create an instance, access a static
member). "Initialized" is not the correct term, by that I mean that
static code blocks are executed and static fields are initialized.

I just tried it.

A.java

class A
{
    public static void main(String[] arrs)
    {
        B b = null;
        System.out.println("Hello, world");
    }
}

Runs fine after deleting B.class