41 Initializing private member of parent class in child class

class Parent {
    private int num;
    public void setMember(int x) { // setter
        num = x;
    }
    public int getMember() { // getter
        return num;
    }
}

class Child extends Parent {
    public static void main(String[] args){
        Child obj = new Child();
        System.out.println("member = " + obj.getMember());
        obj.setMember(5);
        System.out.println("member = " + obj.getMember());
    }
}
// output
member = 0
member = 5