Variable argument function ambiguity

Question

   public static void main(String[] args) {
       System.out.println(fun(2,3,4));
     }
   static int fun(int a,int b,int c)
   {
     return 1;
   }
   static int         


        

Answer 1

This behaviour allows the resolution of two overloaded variable argument calls:

addStates(String... states)
addStates(Enum... states)

Calling addStates() gives a compile ambiguity problem. Adding in a third method:

addStates(){
   addStates(new String[0]);
}

This allows selection selecting the more specific third addStates() to resolve the ambiguity problem of being unsure which of the variable type parameter methods to call.