Re: Class.forName(dbDriver).newInstance()

[Z.BEAT]

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 <[EMAIL PROTECTED]> 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!
> >
> > __
> > Do you Yahoo!?
> > Y! Web Hosting - Let the expert host your web site
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> >
> > --
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Re: Class.forName(dbDriver).newInstance()

[Panos Skondras]

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!
>
> __
> Do you Yahoo!?
> Y! Web Hosting - Let the expert host your web site
> http://webhosting.yahoo.com/
>
> --
> To unsubscribe, e-mail:   
> For additional commands, e-mail: 


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