Marcus's Exam Question

[Chris Cairns]

class Base{
static int oak=99;
}
public class Doverdale extends Base{
public static void main(String argv[]){
Doverdale d = new Doverdale();
d.amethod();
}
public void amethod(){
//Here
}
}
Which of the following if placed after the comment //Here, will compile and modify the value of the variable oak?
1) super.oak=1;
2) oak=33;
3) Base.oak=22;
4) oak=50.1;
Answer is 1,2,3. Wouldn't 4 be implicitly widened?

[Sarma Lolla]

The following runs fine
public void amethod(){
super.oak=100;
Base.oak=120;
oak=123;
}
}
super.oak runs fine as super can be called from any where.
Base.oak works as Base class has package access and the variable also has package access and we are in the same package.
As Doverable is derived from Base we can always access any of the non-private Base variables as if they are defined in the current class.
The fianl option is not correct because it is a double value.