Passing Enum as Type Parameter to method

Fri Oct 24, 2008 6:15 pm

If I have a class A with a static method f(), and an object x of
type Class<? extends A> which has been assigned B.class, where B
extends A, how can I use x to call B.f()?

Fri Oct 24, 2008 6:16 pm

to get this approach working you have to use polymorphism in the
declaration of M.g:

Code:: public class M { public static <T extends A> int g (T x) {return T.f ();} public static <T extends B> int g (T x) {return T.f ();} } class A { public static int f() { return 28; } } class B extends A { public static int f() { return 42; } } public class testABC { public static void main(String[] args) { A alpha= new A (); B beta = new B (); M m = new M (); int retA = m.g (alpha); int retB = m.g (beta); System.out.print(retA); System.out.print(retB); } }

Passing Enum as Type Parameter to method

Passing Enum as Type Parameter to method

Re: Passing Enum as Type Parameter to method

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