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From "Z.BEAT" <zackbea...@yahoo.com>
Subject Re: Class.forName(dbDriver).newInstance()
Date Tue, 22 Oct 2002 18:11:33 GMT
Thanks!  That worked.   This is strange:

Class.forName(dbDriver).newInstance();

compiles fine, with my JSP and JavaBean classes, but I
have to use:

Class.forName(dbDriver);

in order for this Servlet to compile.

Thanks again, Panos.


--- Panos Skondras <pask@hq.acn.gr> wrote:
> Leave out the .newInstance()..
> E.g
>  Class.forName("oracle.jdbc.driver.OracleDriver");
>   Connection con =
> DriverManager.getConnection("URL");
> 
> "Z.BEAT" wrote:
> 
> > Here is a code excerpt:
> > ---------------------------
> > String dbDriver = "org.gjt.mm.mysql.Driver";
> >
> > try
> > {
> >      Class.forName(dbDriver).newInstance()
> > }
> > catch(ClassNotFoundException cnf)
> > {
> >      out.println(cnf);
> > }
> > -----------------------------
> > When I go to compile this servlet, I have been
> getting
> > boeither one of th of the following exceptions:
> >
> > "Undeclared exception.  IllegalAccessException"
> > AND
> > "Undeclared exception.  InstantiationException"
> >
> > Any ideas?   I have never had trouble using the
> mysql
> > driver.  Itis working fine on my other JavaBeans,
> JSPs
> > and Serlets.   And I always use the same database
> > algorithms, so I don't think I am doing anything
> > different.  The only possible change that I can
> see is
> > that these are the first servlets, whereas I have
> > previously been coding with JavaBeans.   The Java
> API
> > documentation mentions that these errors may be
> thrown
> > if the constructor is not present, or accessible
> for
> > the class (Class.forname.newInstance()).   I have
> not
> > touched the driver since I installed it, so I am
> > inclinec to think it has something to do with the
> > servlet environment.
> >
> > Thanks!  Sorry for the long-wind!
> >
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