I have this simple interface/class:

public abstract class Message {

}

public class Message1 extends Message{

}

public class Message2 extends Message{

}

And an utility class:

 public class Utility {       
public void handler(Message m){
    System.out.println("Interface: Message");  }

 public void handler(Message1 m){
    System.out.println("Class: Message1"); }

 public void handler(Message2 m){
    System.out.println("Class: Message2"); } 

}

Now, the main class:

public static void main(String[] args) {

        Utility p=new Utility();

        Message1 m1=new Message1();
        p.handler(m1);

        Message m=(Message) m1;
        p.handler(m);

}

The output is

Class: Message1 Interface: Message

I would that p.handler(m) call the method p.handler(m:Message1)

I don't want use the "manual" command instanceof because I have many cases:

if(m instance of Message1)
p.handler((Message1)m)
else if (m instanceof Message2)
p.handler((Message2)m)

...

If I call m.getClass() I obtain "mypackage.Message1", so the subclass and not the superclass.

I try with this code (use reflection):

p.handler(m.getClass().cast(m));

But the output is Interface: Message

So, this is my problem. I would do a runtime cast of superclass object to subclassobject without use the "code command" istanceof.

I would a right command like this:

p.handler((m.getclass)m);

How can I obtain it? It's possible?

Thank in advance.

Fabrizio