Polymorphism and method overloading

Question

I have a quick and straighforward question:

I have this simple class:

public class A
{
    public void m(Object o)
    {
      System.out.println(\"m         


        

Answer 1

1. This is not polymorphism or overriding. This is method overloading.
2. I tested this and specific method is being called (not the m(Object)) and according to the spec the specific method is always called. Which overload will get selected for null in Java?