Java OCA OCP Practice Question 2979

Question

What will be the output of the following program? 

class Base {/*from ww  w  . j a  v  a  2  s.  com*/
    public Base() {
        System.out.println("Base");
    }
}

class Derived extends Base {
    public Derived() {
        System.out.println("Derived");
    }
}

class DeriDerived extends Derived {
    public DeriDerived() {
        System.out.println("DeriDerived");
    }
}

class Main {
    public static void main(String []args) {
        Derived b = new DeriDerived();
    }
}

a)   Base/*  w  w w  . j  av  a  2s. co m*/

     Derived

     DeriDerived

b)   Derived

     DeriDerived

c)   DeriDerived

     Derived

     Base

d)   DeriDerived

     Derived

e)   DeriDerived



a)

Note

Whenever a class gets instantiated, the constructor of its base classes (the constructor of the root of the hierarchy gets executed first) gets invoked before the constructor of the instantiated class.




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