Passing NULL to Overloading while checking Specificity in two Cases

Question

In the First case, it returns the "String". But in Case 2, what happens when we pass NULL to Exceptions, ArithmeticExceptions and Object.

Case 1-

public class Question{
    public static void JavaHungry(String s)
    {
        System.out.println("String");
    }

    public static void JavaHungry(Object o)
    {
        System.out.println("Object");
    }

    public static void main(String[] args)
    {
        JavaHungry(null);
    }
}

Case 2 -

public class Question3{
    public static void JavaHungry(Exception e)
    {
        System.out.println("Exception");
    }

    public static void JavaHungry(Object o)
    {
        System.out.println("Object");
    }

    public static void JavaHungry(ArithmeticException ae)
    {
        System.out.println("AE");
    }

    public static void main(String[] args)
    {
        JavaHungry(null);
    }
}