Hi,

This can be done with :
Collections.sort(yourArrayList);

Regards,

Arnaud

Write a custom implementation of Comparator which interprets the
strings the way you want, and pass that to the variant of
Collections.sort() which takes a Comparator argument.

What exactly is the order you want?  Please don't give examples, but
rather a description.  Your near-aside of "It also needs to be capable
of sorting letters..." changes everything, because it's no longer clear
what you would consider a "correct" answer to be.

To sort the strings that you listed above, a simple sort of an ArrayList
of strings would work fine.  However, that may not extrapolate to other
strings.  You need to provide complete information about what you want,
and someone will be able to help you accomplish it.

...

...

You have three options:

1. Use an existing class that implements Comparable, such as
String. A good approach if, in all cases, you want the
natural String sort order and you don't have additional data
you need to track.

2. Use a class of your own that implements Comparable. That
makes sense if there is a natural sort order.

3. Use a sort that takes a Comparator parameter. Provide a
Comparator that can compare any two objects in your List.

The first two options both require all objects referenced by
the List to not only implement Comparable, but to be
mutually comparable. For example, String and Integer have no
defined order, so:

"aa".compareTo(new Integer(3));

and

new Integer(3).compareTo("aa");

both throw ClassCastException.

For option 3, you can mix any classes you like in the
ArrayList, as long as your Comparator produces a consistent
order for any pair of objects referenced by the List.

Patricia