Objective-C - Overriding method in subclass

Question

I am having some trouble figuring out hour to accurately override a method in one of my subclasses.

I have subclass (ClassB) of another customclass (ClassA):

Answer 1

By writing:

-(void)methodName {
  [super methodName];
}

You tell the compiler: When executing methodName of Class B, call methodName of its superclass (Class A). So if you want Class B to do something different you have to write code that results in a different behavior. Like this:

-(void)methodName {
  NSLog(@"Hello, world!");
}

Now by calling methodName of Class B "Hello, world!" will be printed on the console.