How to sort Alphanumeric String

Question

I have a problem with sorting strings which include integers. If I use the below code I get sorting like: 1some, 2some, 20some, 21some, 3some, some

However I want it

Answer 1

First make an alphanumerical comparator splitting the string in String or Integer parts.

public class AlphaNumericalComparator implements Comparator {
    @Override
    public int compare(String o1, String o2) {
        List