RE: Extending more than one base class....

["Kendall Coolidge" <Kendall.Coolidge@xxxxxxxxx>]

Mike,

This might be a situation where you should look into using inner classes. As I 
understand it, you can have an outer "enclosing" class and declare two "inner" 
classes.  Each of the inner classes can extend a different abstract class, such 
as the commercial classes you are using.  I'm not an expert at this, but I 
believe this (combined with interfaces) is how Java accomplishes multiple 
inheritance.

Good luck
Ken

-----Original Message-----
From: Mike Silvers [mailto:msilvers@HBS-INC.COM]
Sent: Thursday, June 27, 2002 2:02 PM
To: java400-l@midrange.com
Subject: Re: Extending more than one base class....


Lets try that again...it's not going to work.  Both of the base classes are
abstract and need to be extended in order for variables to be accessed.  Any
other ideas?

Mike

----- Original Message -----
From: "Mike Silvers" <msilvers@hbs-inc.com>
To: <java400-l@midrange.com>
Sent: Thursday, June 27, 2002 1:23 PM
Subject: Re: Extending more than one base class....


> Bruce,
>
> Great Idea.... I think it will work in this instance.
>
> Thanks!
>
> Mike
>
> ----- Original Message -----
> From: "Bruce Jin" <JIN007M@hotmail.com>
> To: <java400-l@midrange.com>
> Sent: Thursday, June 27, 2002 3:10 PM
> Subject: Re: Extending more than one base class....
>
>
> > You may have to use contain instead of inheritance. The 2 classes from 2
> > vendors may have variables/methods having the same names. Have your
class
> > contain the other 2 classes will allow you to access variables/methods
in
> > each class correctly. Say your class is M and the vendor's classes are
C1
> > and C2
> >
> > class M {
> >
> > void method() {
> >
> > C1 obj1 = new C1();
> > C2 obj2 = new C2();
> >
> > obj1.xxxx()
> > obj2.xxxx();
> >
> >  }
> >
> > ----- Original Message -----
> > From: "Mike Silvers" <msilvers@HBS-INC.COM>
> > To: <java400-l@midrange.com>
> > Sent: Thursday, June 27, 2002 7:15 AM
> > Subject: Extending more than one base class....
> >
> >
> > > All,
> > >
> > > I need to extend more than one base class for a specific class.  Both
> > > classes are from commercial packages, so I do not have the source for
> > them.
> > > I can not use an interface for either of them.  Obviously, I can't
> extend
> > > both of the classes for this class.  Does anyone have any ideas to
work
> > > around this Java restriction?
> > >
> > > Thanks
> > >
> > > Mike
> > >
> > > ================================
> > > Mike Silvers
> > > AS/400 Senior Programmer/Analyst
> > > AS/400 IBM Certified RPG IV Developer
> > > AS/400 IBM Certified Solutions Expert
> > > Hainey Business Systems
> > > 8 E. Canal St
> > > Dover, PA 17315
> > > Branch Office:  (410) 397-8739
> > > Phone:  (800) 932-3380 ext. 237
> > > Fax:  (717) 292-9474
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> > > ________________________________
> > > Providing E-Commerce, EDI, AS/400
> > > Development, Java Development,
> > > and related services nationwide.
> > > ================================
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> > >
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