A confusing piece of code, may be food for thought.

Question

Looking at the following code it seems very obvious to me that the output should be 1010 but it turns out to be 2020. Could anybody explain the reason behind it?
public class TestClass
  public static void main(String args[ ] )
    TestClass tt = new TestClass();
    tt.ww();
  public void ww()
    Base b = new Base();
    Base b2 = new Base();
    b.iAge = 10;
    b2.iAge = 20;
    System.out.print(b.iAge);
    Integer iw = new Integer(b.iAge);
    col(iw);
  public static void col(Object o)
    Integer iw = (Integer) o;
    System.out.print(iw.intValue());
class Base
  public static int iAge;
}

Answer 1

Considering that the iAge member is 'static' (only one copy no matter how many instances of the object), and that you last set it to 20 before you output anything, what's to wonder about?