In Java, How do you quicksort an ArrayList of objects in which the sorting field is multiple layers deep?

Question

Basically, I have a Container class called \"Employees\" which has in it an ArrayList. This ArrayList contains \"Employee\" objects, which in turn contain \"EmployeeData\" objec

Answer 1

Define Employee implements Comparable.

In the compareTo method, dig into the layers and compare the strings you need. Then you can use Collections.sort(), or you can store the data in a SortedSet, which is naturally ordered.