I'm tring to access a function of an instance which is in an arraylist. Is there any way to do that without using the class name of the instance?

import java.util.ArrayList;
import java.util.List;

class apple{
int price;

public void myFunction(int iPrice)
{
    price=iPrice;
}
}

class orange{
int price;

public void myFunction(int iPrice)
{
    price=iPrice;
}
}

public class main {

public static void main(String[] args) {
    List list= new ArrayList();

    //create 3 apple object to list
    list.add( new apple() );
    list.add( new apple() );
    list.add( new orange() );

    list.get(0).myFunction(1); /* Error: The method myFunction(int) is undefined for the type Object*/

}
}

I know that;((apple) list.get(0)).myFunction(1); is a way but I'dont want to use any class name while calling the function.