sorting arraylist according to object property code example

Example 1: how to sort arraylist

Collections.sort(coll); -> helps sort an arraylist.

Example 2: java how to sort custom objects in descending orde

ArrayList<StudentInformation> infos = new ArrayList<StudentInformation>();
// fill array
Collections.sort(infos, (s1, s2) ->
    Integer.compare(s2.getBirthYear(), s1.getBirthYear()));