What is the result(Arrays.sort)? : Questions « Object Oriented « SCJP

1. SCJP
2. Object Oriented
3. Questions

import java.util.*;

public class MainClass {
  public static void main(String[] args) {
    String[] sa = { "nickel", "button", "key", "lint" };
    Sorter s = new Sorter();
    for (String s2 : sa)
      System.out.print(s2 + " ");
    Arrays.sort(sa, s);
    System.out.println();
    for (String s2 : sa)
      System.out.print(s2 + " ");
  }

  class Sorter implements Comparator<String> {
    public int compare(String a, String b) {
      return b.compareTo(a);
    }
  }
}