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Inheritance of private members in Java and C++?

When I create a subclass 'b' from class 'a' in JAVA, and create an instance from 'b', why 'b' does not inherit the private members of 'a'? And what happens if I do it in C++

12th Nov 2016, 11:05 PM
Marcell Juhasz
5 Respostas
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it inherit the private, but you cannot access it directly that's what encapsulation is for
14th Nov 2016, 11:15 AM
Raizal I N Pregnanta
Raizal I N Pregnanta - avatar
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private - are only seen within a class. public - everyone protected - is seen by the class that uses it and children hope this helps
12th Nov 2016, 11:32 PM
blueelmo
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blueelmo answered correctly and oop principles are the same everywhere so the same thing will happen in c++ too.
12th Nov 2016, 11:59 PM
David
David - avatar
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to access the private members of the class use getters and setters
13th Nov 2016, 12:32 AM
Abdelilah E.
Abdelilah E. - avatar
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You mean: public class A { private int x; public A(int initX) { x = initX; } public int getX() { return x; } public void setX(int num) { x = num; } }; public class B extends A { private int y; public B(int initX, int initY) { super(initX); y = initY; } // not correct: // public int sumXY() // { return x + y } // correct: public int sumXY() {return ??????? + y } }; I do not know what should I write there (???????). If I had an object, I could call the getX() method like: A_object.getX(). But I do not know how to call that method. May be "return getX() + y" ? Because getX() method was inherited, so I can use. Is this the solution?
14th Nov 2016, 11:58 AM
Marcell Juhasz