java - How to sort ArrayList based on a variables value -

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• sort arraylist of custom objects property 23 answers

i have 1 arraylist<users> users_list; , in users have name, surname, age etc. want implement sorting algorithm sort arraylist based on users age. searched lot found sorting arrays.

use custom java.util.comparator:

public class usercomparator implements comparator<user> {     @override     public int compare(user u1, user u2) {         return u1.getage().compareto(u2.getage());     } } 

and sort like:

collections.sort(users_list, new usercomparator());