import java.util.$*$; $//$ for ArrayList

public class Pet

$\{$

private String name;

private String type;

public Pet$($String n$,$ String t$)$

$\{$

name $=$ n;

type $=$ t;

$\}$

public String toString$()$

$\{$

return name $+"$ is a $"+$ type;

$\}$

public static void main$($String$[]$ args$)$

$\{$

ArrayList petList $=$ new ArrayList$()$;

petList.add$($new Pet$("$Sammy$",$ "hamster"$))$;

petList.add$($new Dog$("$Fido$"))$;

$//$ This loop will work for all subclasses of Pet

for $($Pet p : petList$)$

$\{$

System.out.println$($p$)$;

$\}$

$\}$

$\}$

class Dog extends Pet

$\{$

public Dog$($String n$)$

$\{$

super$($n$,$ "dog"$)$;

$\}$

$\}$