Sort items of an ArrayList with Collections.reverseOrder() : Collections « Collections « Java Tutorial

1. Java Tutorial
2. Collections
3. Collections

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class Main {
  public static void main(String[] args) {
    List<String> colours = new ArrayList<String>();
    colours.add("red");
    colours.add("green");
    colours.add("blue");
    colours.add("yellow");
    colours.add("cyan");
    colours.add("white");
    colours.add("black");

    Collections.sort(colours);
    System.out.println(Arrays.toString(colours.toArray()));

    Collections.sort(colours, Collections.reverseOrder());
    System.out.println(Arrays.toString(colours.toArray()));
  }
}