J2SE of new characteristics---the enhancement of circular statements

J2se| Loop | statement
A statement like this before:



void Cancelall (Collection c) {



for (Iterator i = C.iterator (); I.hasnext ();) {



TimerTask TT = (timertask) i.next ();



Tt.cancel ();



}



}



You can write this later:



void Cancelall (Collection c) {



for (Object o:c)



((TimerTask) O). Cancel ();



}



Sometimes we might write this code:



List suits = ...;



List ranks = ...;



List Sorteddeck = new ArrayList ();



for (Iterator i = Suits.iterator (); I.hasnext ();)



for (Iterator J = ranks.iterator (); J.hasnext ();)



Sorteddeck.add (new Card (I.next (), J.next ()));



This code does not work as we think, because every time the execution of the second for statement throws the execution of I.next (), we actually do not have the purpose of traversing the I and may cause a nosuchelementexception exception.



One way to solve this problem is to rewrite the following code:



for (Iterator i = Suits.iterator (); I.hasnext ();) {



Suit Suit = (Suit) i.next ();



for (Iterator J = ranks.iterator (); J.hasnext ();)



Sorteddeck.add (new card (suit, J.next ()));



}

With the new features of the Java language, we can write this:



for (Suit suit:suits)



for (Rank rank:ranks)



Sorteddeck.add (new card (suit, rank));



Is this code beautiful?