overriding

First of all, the Answer here is very helpful: Overriding a Magento Controller in community extention However, despite passing both of the "tests" mentioned in the answer there, I still have a module controller override that just refuses to work. Here is what I have: \app\code\local\Company\OnepageCheckout\etc\config.xml <?xml version="1.0"?> <config> <modules> <Company_OnepageCheckout> <version>0.0.1</version> </Company_OnepageCheckout> </modules> <frontend> <routers> <onepagecheckout> <args> <modules> <company_onepagecheckout before="IWD_OnepageCheckout">Company_OnepageCheckout</company

I am trying to override document.cookie in my Chrome extension and I'm having a lot of trouble getting the original document.cookie functionality to work at the same time. Currently I have this: var _cookie = document.cookie; document.__defineSetter__("cookie", function(the_cookie) {_cookie=the_cookie;} ); document.__defineGetter__("cookie", function() {return _cookie;} ); I am injecting the JS from a content script using the technique from here . The behavior I'm seeing is that my re-defined setter and getter get called, but the original function is no longer working. For example, I can check

I was practicing exception handling mechanisms with method overriding in java...My code is as follows: class base { void show() { System.out.println("in base class method"); } } class derived extends base { void show() throws IOException { System.out.println("in derived class method"); throw new IOException(); } } class my { public static void main(String[] args) { try { base b = new derived(); b.show(); } catch (IOException e) { System.out.println("exception occurred at :" + e); } } } Showing an error : So, I corrected following: void show() throws IOException{ and it is working correctly...

Should be a newbie question... I have existing code in an existing class, A, that I want to extend in order to override an existing method, A::f(). So now I want to create class B to override f(), since I don't want to just change A::f() because other code depends on it. To do this, I need to change A::f() to a virtual method, I believe. My question is besides allowing a method to be dynamically invoked (to use B's implementation and not A's) are there any other implications to making a method virtual? Am I breaking some kind of good programming practice? Will this affect any other code trying

I know in Java , static method can not be overriden by the subclass. Two questions: 1. Why is that? Could anyone explain me the reason inside it? 2. Can subclass override final method in super class then? Jon Skeet Static methods aren't called on a particular instance - so they can't be called polymorphically. They are called on the type itself - nothing about the binding relies on any information which is only available at execution time. The point about polymorphic calls is that the method implementation which ends up being executed depends on the execution-time type of the target of the