Sorting Strings that contains number in Java [duplicate]

Answer 1

try this. I've assumed that you will always have "room" at the start of your string.

    List list = Arrays.asList("room1", "room100", "room2");
    Collections.sort(list, new Comparator()
    {
        @Override
        public int compare(String o1, String o2)
        {
            return new Integer(o1.replaceAll("room", ""))
                .compareTo(new Integer(o2.replaceAll("room", "")));
        }

    });