Re: virtual member
On Mar 12, 8:05 am, pelio <pe...@liticom.ar> wrote:
EventHelix.com dixit:
On Mar 11, 8:48 pm, worlman...@yahoo.com wrote:
How is C++'s virtual member compare to Java?
does Java has virtual function?
like the following, what's different to have methods declare virtual
VS non-virtual?
Virtual functions are resolved at run-time, according to the
dynamic type of the object. Non-virtual functions are resolved
at compile time, according to the static type of the object.
#########################
Public Member Functions
virtual ~IInterfaceElement ()
IInterfaceElement ()
void SetContainer (CContainer *pParentContainer)
virtual void Initialize ()
virtual void Update ()
virtual void Draw ()
virtual void Release ()
virtual void SetZOrder (float fZOrder)
virtual float GetZOrder ()
virtual bool IsInitialized ()
In Java all methods are virtual by default.
That's not true. In Java, private functions are never virtual.
(Of course, in most cases, the only functions you want virtual
are the private ones.)
"by default" ? is there a way to have a method non-virtual in
java ?
It depends on what you mean. You can declare a function final,
in which case, it can't be overridden in a derived class.
Logically, there are two different aspects involved: the
function overrides a function in a base class, and the function
can be overridden in a derived class. In C++, the virtual
keyword affects the function being declared, saying it can be
overridden; it also affects all of the overriding functions in
the derived classes, saying that they too can be overridden. In
Java, the final modifier says that the function cannot be
overridden in any derived class; it may still override a
function in a base class (which means that it's still virtual).
--
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