Re: Confusion with templates, generics, and instanceof

Arne Vajh?j wrote:


This does compile, but overloads equals() not overrides it. The
question is, which is desired? Overload, or override?

Going back to the first attempt:

     @Override
     public boolean equals( Object o )
     {
         boolean result = false;
         //if (o instanceof T) {
         if( o instanceof FooWrapper ) {
             FooWrapper f = (FooWrapper) o;
             @SuppressWarnings( "unchecked" )
             T t = (T) f.getFoo();
             if( foo.equals( t ) ) {
                 result = true;
             }
         }
         return result;
     }

Might be what you are after. (Note: compiled, but not tested.)

(Now I'm unclear why the cast (T) is required. Anyone know why
getFoo(), which returns type T, needs a cast?)