How to sort list of case insensitive strings?

Sort list of strings - case insensitive

To sort list of strings ignoring the case

Using java library flag

Collections.sort(list, String.CASE_INSENSITIVE_ORDER);

By passing own comparator

Collections.sort(list, new Comparator<String>() {

     @Override

     public int compare(String s1, String s2) {

           return s1.compareToIgnoreCase(s2);

     }

});