Vote - Favorite Loop Statement

[angryboy]

Please vote.
Just wondering which is the most popular loop statments... :rolleyes:

I use for loop statements most of the time.

Also, there is a very good thread on loop performance here:
loop performance (no problem, just investigating)

[CJSLMAN]

"for" is the loop I use the most... probably followed up by "while"

CJSL

[MK12]

you should add the special for loops.. forget name its not special but you know:

int[] items = new int[12];
for(int item:items) {
     System.out.println(item);
}

I know that they are for loops just better to use in array conditions, but they still are different.
I voted for loops, but really they all have different purposes, some better at some things others better at other things, you don't just use your favourite. I am almost positive no one will vote do while. I have never seen any code before except maybe tutorial examples that has used a do while..
EDIT: sorry didn't look carefully, didn't see for each... That's what its called.

[masijade]

I'm sorry, but, whichever one is most applicable. And, the "enhanced" for loop is actually an Iterator and a while loop.

If I have mulitple items to index into, with the same index, a for loop, if I have a single thing to iterate over, the enhanced for loop (so, a while loop). If I need to perform an action until a specific criteria is met, a while loop, unless I know, definately, that the first time will succeed, then a do while, etc, etc, etc.

I have no "favorite".

[angryboy]

ok... maybe "favorite" is a bad word choice on my part, but i'm sure most readers get what I've meant. Some of us have a loop statement they are more comfortable with. For me, it's the for loop, because everything's on one line.

For example, during test:

for(;true;){
  // code here
}

Then I can change it to:

while(true){
  // code here
}

OR

for(int i=0;i<END;i++){
  // code here
}

AND don't you think this look messy??

int i = 0

// code here

while(i<END){


   // code here


   i++;
}

compared to:

int i=0
...
for(;i<END;i++){
  // Beautiful!!
}

[MK12]

yeah but check this out:

while(input.hasNext())
      System.out.print(input.next()); // BEAUTIFUL
}

now compare to the Messy for loop:

for(;;) {
     if(input.hasNext()) System.out.print(input.next());
     else break; // MESSY
}

It all depends on situation. Or this scenario:

String[] array = { "Java", "For", "Loops", "Example", "String", "Array" };
for(String str:array) { // BEAUTIFUL Foreach
     System.out.print(str);
}

compared to now Messy for loop OR while loop:

String[] array = { "Java", "For", "Loops", "Example", "String", "Array" };
for(int i = 0; i < array.length; i++) {
     System.out.print(array[i]);
}
OR
String[] array = { "Java", "For", "Loops", "Example", "String", "Array" };
int i = 0;
while(i < array.length) {
     System.out.print(array[i]);
     i++;
}

Each different situation there is usually one best option to use, one loop that makes it cleaner code.

[angryboy]

for(;;) {
     if(input.hasNext()) System.out.print(input.next());
     else break; // MESSY
}

well, this one should be written as:

for( ;input.hasNext() ;) {
   System.out.print(input.next());
   // STILL PRETTY
}

But yeah i get your point. The one i found myself using most often is for loop, wild while loop...rarely.

[Webuser]

what about this one )))

for(int i=0; i<1; i++){
i=0;
}

infinity is the best thing ))) make infinity of any loop )
any more idea?

[MK12]

Webuser, I've always wondered, why do you always use right parentheses a lot like this )))?

[Eranga]

For me too, 'for' loo. Some cases for-each more reliable than 'for' loop to me.

[Eranga]

what about this one )))

for(int i=0; i<1; i++){
i=0;
}

infinity is the best thing ))) make infinity of any loop )
any more idea?

Why don't you use this way? Just few key-press you need.

        for(;;) {
            // Do something here
        }

[angryboy]

i wish this is possible.

for(int i: 15){    // future of java??
  list.get( i );   // SUPER PRETTY
}                  // loop 15 times.

where 15 can also be x of type int.
where list.size() == 50000.
instead of this.

for(int i=0; i<15; i++){
  list.get( i );   // ALOT MORE TYPING...
}

EDIT:
MiniQuiz: Do you think if this will work?

StringBuilder sb = new StringBuilder();
Scanner input = new Scanner(new File("file.txt"));

for(String s=input.next();input.hasNext();s=input.next()) {
  sb.append(s + " ");
}
System.out.println(sb);

[masijade]

Okay, let me state it this way, I am just as comfortable using each of those loops.

[Eranga]

Each of those are useful in projects. ;)

[Webuser]

Why don't you use this way? Just few key-press you need.

        for(;;) {
            // Do something here
        }

for more interest :) it is sick to use only standart ways )
by the way in code like for( ; ; ){} you can predict the loop is endless at first sight but the way I showed can remake any for loop from limited to endless in unexpected manner ;)
even code like a

for(int i=0; i<10000; i++){}

can take infinity if you write some like a

for(int i=0; i<10000; i++){i=0;}

someplace in the loop body. It is more funny way than practical but it can be used too )))

[Webuser]

[QUOTE=angryboy;56257]i wish this is possible.

for(int i: 15){    // future of java??
  list.get( i );   // SUPER PRETTY
}                  // loop 15 times.

but in which side? ++ or -- ? how you point it here? comes more like basic style I guess )))

[MK12]

[QUOTE=Webuser;56475]

i wish this is possible.

for(int i: 15){    // future of java??
  list.get( i );   // SUPER PRETTY
}                  // loop 15 times.

but in which side? ++ or -- ? how you point it here? comes more like basic style I guess )))

And , what does i start at? once you put in these, you're back to the ordinary for loop. But for some cases, you don't need the i variable. consider this:

for(15) { // loop 15 times
     s = change(); // SUPER PRETTY
     System.out.println(s); // BEAUTIFUL
}

hehe :D

[toadaly]

I use a plain old 'for' more often than anything else, followed by the new 'for each' construct {...for(String s: strings)...}, followed by 'while', and lastly 'do while'. Actually, I think I've only ever used do-while in c.

[7oclock]

For me, 'while' loop.

[jurka]

Vote for each and for