widening followed by autoboxing

//widening followed by auto boxing is not allowed
//bute ----to---> long ---to--->  Long  ---->  Not allowed
class Sc
    {
              public static  void  m1(Long l)
            {
                System.out.println("Long");
            }
            public static void main(String a[])
            {
                byte b=5;
                m1(b);    //in valid  
            } 
        }