Ok, I wasn't clear... let me re-write my mail:
The problem is that I want to test if an object is subclass of a
java.lang.Class INSTANCE... Nonsense example:
java.util.Date date1 = new java.util.Date();
java.sql.Date date2 = new java.sql.Date();
Class clasz = date1.getClass();
if (date2 instanceof clasz)
{
do something...
}
There is a way? The code that made me need to test if an object is subclass
of another one's is quite hard to explain briefly :-)
I implemented the following, but I'm not very proud of myself:
private boolean instanceOf(Object obj, Class clasz)
{
if (obj == null || clasz == null) return false;
Class objClass = obj.getClass();
Class[] classes = objClass.getClasses();
if (classes == null) return false;
for (int i = 0; i<classes.length; i++)
{
if (classes[i].equals(clasz)) return true;
}
while (objClass != null)
{
if (objClass.equals(clasz)) return true;
objClass = objClass.getSuperclass();
}
return false;
}
On Thu, 2003-02-20 at 16:13, Kris Schneider wrote:
> Maybe I'm missing something, but Class is a final class.
>
> Quoting Mike Jackson <[EMAIL PROTECTED]>:
>
> > Perhaps you ought to post a snippet of what doesn't work. I personally
> > haven't had any problems with "instanceof", but without seeing what you're
> > doing I don't think any of us can help.
> >
> > --mikej
> > -=-----
> > mike jackson
> > [EMAIL PROTECTED]
> >
> > > -----Original Message-----
> > > From: Felipe Schnack [mailto:[EMAIL PROTECTED]]
> > > Sent: Thursday, February 20, 2003 11:01 AM
> > > To: Tomcat Users List
> > > Subject: instance of (ot)
> > >
> > >
> > > I would like to use instanceof's keyword funcionality.
> > > The problem is that I want to test if a class is subclass of a
> > > java.lang.Class object... There is a way? Instanceof keyword doesn't
> > > work, so I implemented the following, but I'm not very proud of myself:
> > >
> > > private boolean instanceOf(Object obj, Class clasz)
> > > {
> > > if (obj == null || clasz == null) return false;
> > > Class objClass = obj.getClass();
> > > Class[] classes = objClass.getClasses();
> > > if (classes == null) return false;
> > > for (int i = 0; i<classes.length; i++)
> > > {
> > > if (classes[i].equals(clasz)) return true;
> > > }
> > > while (objClass != null)
> > > {
> > > if (objClass.equals(clasz)) return true;
> > > objClass = objClass.getSuperclass();
> > > }
> > > return false;
> > > }
> > >
> > >
> > > --
> > >
> > > Felipe Schnack
> > > Analista de Sistemas
> > > [EMAIL PROTECTED]
> > > Cel.: (51)91287530
> > > Linux Counter #281893
> > >
> > > Centro Universitário Ritter dos Reis
> > > http://www.ritterdosreis.br
> > > [EMAIL PROTECTED]
> > > Fone/Fax.: (51)32303341
> > >
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > > For additional commands, e-mail: [EMAIL PROTECTED]
> > >
> >
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
>
>
> --
> Kris Schneider <mailto:[EMAIL PROTECTED]>
> D.O.Tech <http://www.dotech.com/>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
--
Felipe Schnack
Analista de Sistemas
[EMAIL PROTECTED]
Cel.: (51)91287530
Linux Counter #281893
Centro Universitário Ritter dos Reis
http://www.ritterdosreis.br
[EMAIL PROTECTED]
Fone/Fax.: (51)32303341
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