29 questions
In that code, the Professioner and Student classes are sister classes that belong to the School parent class.I wonder how I can modify the Edison of the Professor class to come out when Jane.matchProf...
How do I set up a class that represents the interface?Can I just write an abstract class?
virtual base class, virtual Why is inheritance used?I want to know what it means.class Foo{public: void DoSomething() { /* ... */ }};class Bar : public virtual Foo{public: void DoSpecific() { /* ... *...
It's a general OOP question. I want to make a general comparison between Interface and the basic use of abstraction classes. I want to know the difference between using the interface and using the abs...
In Perl and Java, super() was used to call the method of the parent class.package Foo;sub frotz { return Bamf;}package Bar;@ISA = qw(Foo);sub frotz { my $str = SUPER::frotz(); return uc($str);}I don't...
class Dad{ protected static String me = dad; public void printMe() { System.out.println(me); }}class Son extends Dad{ protected static String me = son;}public void doIt(){ new Son().printMe();}When y...
I'm a self-taught student in Java. I am studying inheritance and super class nowIf a superclass can have multiple constructors, I would like to ask you how to create a subclass constructor. The code I...
Ian Media is a student who is studying with a book called 'The first java programming'. I was studying inheritance and constructor, but the book said that in order for an explicit constructor or impli...
I'm studying super()What is the difference between ChildA() and ChildB() in the code below?class Base(object): def __init__(self): print Base createdclass ChildA(Base): def __init__(self): Base.__in...
Is this the only way to call a parent class constructor in a structure where C inherits B and B inherits A?class A(object): def __init__(self): print Creator Aclass B(A): def __init__(self): super(B...
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