Using inherited overloaded methods

Question

I have two classes:

public class ClassA {
    public void method(Number n) {
        System.out.println(\"ClassA: \" + n + \" \" + n.getClass());
    }
}
         


        

Answer 1

because number 3 is automatically boxed to Integer.

please see the link below: http://www.javabeat.net/articles/print.php?article_id=31

General Rule: Arguments are implicitly widened to match method parameters. It's not legal to widen from one wrapper class to another.