Java overload confusion

Question

java is not able to call any overload method as shown below :-

class LspTest{

    public void add(int a, float b){
    System.out.println(\"First add\");
}         


        

Answer 1

This is the clear case of ambiguity which leads to a Compile Error.

Java compiler supports the type promotion. First of all, it'll checks for more specific data type if not match then it'll promote to next data type.

Java compiler will supports the type promotion in following order.

byte --> short --> int --> long --> float --> double

As your parameters (int,int) can be auto-promoted to float, java compiler can't decide in which one to invoke as both of your methods accepts the (1,1)