Why is String method called not Object method

Question

In the below program ::
class Test
     public void callMethod(Object o)
          System.out.println("Object Method Called");
     public void callMethod(String s)
          System.out.println("String Method Called");
     public static void main(String[] args)
          Test t = new Test();
          t.callMethod(null);
}

Answer 1

In the below program ::
class Test
     public void callMethod(Object o)
          System.out.println("Object Method Called");
     public void callMethod(String s)
          System.out.println("String Method Called");
     public static void main(String[] args)
          Test t = new Test();
          t.callMethod(null);
}If more than one method could be called the most specific one is called. Since a String is an Object then the String one gets called.