Answer by Manohar for In detail, how does the 'for each' loop work in Java?

It adds beauty to your code by removing all the basic looping clutter. It gives a clean look to your code, justified below.

Normal for loop:

void cancelAll(Collection<TimerTask> list) {    for (Iterator<TimerTask> i = list.iterator(); i.hasNext();)         i.next().cancel();}

Using for-each:

void cancelAll(Collection<TimerTask> list) {    for (TimerTask t : list)        t.cancel();}

for-each is a construct over a collection that implements Iterator. Remember that, your collection should implement Iterator; otherwise you can't use it with for-each.

The following line is read as "for each TimerTask t in list."

for (TimerTask t : list)

There is less chance for errors in case of for-each. You don't have to worry about initializing the iterator or initializing the loop counter and terminating it (where there is scope for errors).