Is CLASS VARIABLE changed?

Question

I have two classes in same package. I defined a class variable 'no_of_gear' and later changed its value. The changed value
works in the same class but does not work in sub-class in same package.
class ClassVar {
     static int no_of_gear = 5;
     public static void main(String[] args) {
          System.out.println(no_of_gear); //Prints 5
          ClassVar cv = new ClassVar();
          System.out.println(cv.no_of_gear); //Prints 5
          cv.no_of_gear = 8;
          System.out.println(cv.no_of_gear); //Prints 8
          System.out.println(no_of_gear); //Prints 8
}Here is sub-class in same package.
class ClassVarAcc extends ClassVar {
     public static void main(String[] args) {
          System.out.println(no_of_gear); //Prints 5
          ClassVar cv = new ClassVar();
          System.out.println(cv.no_of_gear); //Prints 5
}Java Tutorial by SUN reveals that if class variable is changed by one object it is changed for all objects of that class. But, my code does not support the statement. Please, Can you clarify it?

Answer 1

Yes i do but not to the extent you are pointingto.
Why can't you just say you don't when you don't?
Can you answer in details?Look at your super class
class ClassVar {
static int no_of_gear = 5;
public static void main(String[] args) {
     System.out.println(no_of_gear); //Prints 5
     ClassVar cv = new ClassVar();
          System.out.println(cv.no_of_gear); //Prints 5
     cv.no_of_gear = 8;
          System.out.println(cv.no_of_gear); //Prints 8
     System.out.println(no_of_gear); //Prints 8
}In what method does the value of no_of_gear change?
Now look at the sub-class. Do you see yourself
calling this method?OH my dear. It is class variable that can be accessed directly (unlike instance variables) without the need of some method to change its value.
Here i change it. (Remeber: a copy of instance variable is passed to an instance of some class but no copy of class variable is passed to an instance of that class)
     cv.no_of_gear = 8;
     System.out.println(cv.no_of_gear); //Prints 8
Here it works fine.
     System.out.println(no_of_gear); //Prints 8
But, why does not it work in sub-class?