How is the Method Parameter Identified in this Code Snippet ?

package methods;
public class Me10 {
     public static void main(String[] args) {
          short y=6;
          long z=7;
          go(y);
          go(z);
     public static void go(Short s)
          System.out.println("SHORT");
     public static void go(Long l)
          System.out.println("LONG");
     public static void go(int i)
          System.out.println("INT");
O/P :
INT
LONGEven when y is declared as short why does the INT method get called ?
What can we do so that when i pass y , short method will be called ?
Thabks in Advance.

as far as I understand, method parameters are identified per JLS section 15.12.2 'Determine Method Signature':
"...This step uses the name of the method and the types of the argument expressions to locate methods that are both _accessible_ and applicable, that is, declarations that can be correctly invoked on the given arguments. There may be more than one such method, in which case the _most specific_ one is chosen. The descriptor (signature plus return type) of the most specific method is one used at run time to perform the method dispatch...
...The informal intuition is that one method is more specific than another if any invocation handled by the first method could be passed on to the other one without a compile-time type error..." [...click here to continue reading if you're interested|http://java.sun.com/docs/books/jls/third_edition/html/expressions.html#15.12.2|JLS 15.12.2 'Determine Method Signature']
As for calling 'Short' method for 'y' value, I'd probably use something like go(new Short(y))

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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

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    C:\Program Files\Java\jdk1.6.0_02\bin>
    Message was edited by:
    aron_phil

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