Why is autoboxing not happening

[Vishal Hegde]

public class X
{
  public static void go(short n){System.out.println("short");}
  public static void go(Short n){System.out.println("SHORT");}
  public static void go(Long n){System.out.println("LONG");}
   
public static void main(String [] args)
 {
    Short y=6;
    int z=7;
go(y);
go(z);
 }
}

Why is autoboxing not happening why is it giving error at go(z);

[Ulf Dittmer]

Boxing an int results in an Integer, not a Long. Those two are not assignment-compatible.

If you want a method that can be used for both, declare it as taking a Number - that covers both Long and Integer.

[fred rosenberger]

Vishal,

I see that Ulf has already answered your question, but can I give you a tip on how to make better posts? When you say "why is it giving error at XXX", it can be of tremendous help to your fellow ranchers if you post the actual error you get. It makes it much easier for someone to look and focus in on the problem, making it more likely they will help you.

[Vishal Hegde]

Sure Fred, will not repeat the same mistake