No. The compiler does not allow. If DropDownChoice is of type <? extends BaseClass> then the problem is that it assumes that getChoiceRenderer() is also of type <? extends BaseClass>. Now at runtime, because of the wildcard, I do not know what class I have, and I absolutely cannot use the renderer. The only workaround is to cast the renderer into <BaseClass> (which it actually is!!) and that works, but the warning remains.
Tricky.... ** Martin 2009/6/13 James Carman <jcar...@carmanconsulting.com>: > But, the compiler only knows what you're allowed to do by the type of > the variable. You do not need to declare your variables with the > wildcards. > > On Fri, Jun 12, 2009 at 6:31 PM, Cristi Manole<cristiman...@gmail.com> wrote: >> declaration is not the problem. from what i remember from generics (I might >> be wrong), you're not allowed to instantiate "generically". you have to tell >> the compiler exactly what type you want. at runtime it has no idea about >> generics. >> >> On Sat, Jun 13, 2009 at 12:41 AM, James Carman >> <ja...@carmanconsulting.com>wrote: >> >>> Just because the constructor is declared that way (with the ?) doesn't mean >>> you have to declare your variables that way. >>> >>> On Jun 12, 2009 4:43 PM, "Martin Makundi" < >>> martin.maku...@koodaripalvelut.com> wrote: >>> >>> > new DropDownChoice<BaseClass> ? >>> >>> Maybe ... >>> >>> ** >>> Martin >>> >>> > > On Fri, Jun 12, 2009 at 6:06 AM, Martin > Makundi< >>> martin.maku...@koodaripalvelut.com> wrote: >>... >>> >> >> >> >> -- >> Cristi Manole >> >> Nova Creator Software >> www.novacreator.com >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > For additional commands, e-mail: users-h...@wicket.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
