Which is best for iterator: For loop or while loop

[Leeland]

The question may appear stupid to most but its an important and major concern for a person like me:

Iterator it = myList.iterator();
while(it.hasNext()) {
}

or:

for(Iterator it = myList.iterator(); it.hasNext(); ) {
}

I wrote the second way, but two of my bosses tell me it's wrong, without giving any proper reason. So here arises a big argument for me: which is proper and best to implement an iterator "for" or "while"?

[opaper]

Well at worst, you can do:

    {
     Iterator it = myList.iterator();
     while (it.hasNext()) {
     }
    }

And suddenly your iterator is of no greater or you use a block with (I think it is not in java?). The argument of the PC, great, even I dare not make them like that. At first glance, I prefer the first syntax, but actually, the second seems much cleaner. Ok, I am speaking more in the Java category

[CitricAcid]

With C#, I wondered about the absence of the "foreach" in Java (it's still nicer)

And I came over here: http://java.sun.com/j2se/1.5.0/docs/...e/foreach.html

Well, not after I master the trick, but it would be better still as syntax? In any case, the article stresses well above. And since this is the official doc.

Only limited, as in C#, you can not serve yourself to change the number of elements in your list.

At worst, it will strengthen your position towards the forum, since they do not mention the syntax of the while, which seems out of competition

[Modifier]

Your chief has plenty of free time and probably will seek a lather. As he can not seem to do so by his competence, he does so with arguments that at best I would call harrowing. If it poses a problem of writing in one way or another exchange box, both are completely equivalents and should be read with equal facility by any developer whose intelligence exceeds the searching.

[MindSpace]

I am of the same opinion as you Leeland: 2nd code reduces the scope of the iterator. Many Internet sites also use this notation.

Indeed it is perhaps not very "pretty", which is why they invented the foreach, which is implemented in Java since version 1.5 released in 2004. For your example it gives this:

for(Bidule b : myList) {
}

In practice, the compiler translates the foreach by your 2nd method, so a loop with an Iterator declared locally, but the syntax is much nicer.