Example of Sorting Arrays

import java.util.Arrays;
import java.util.Comparator;

public class SearchObjArray {
 public static void main(String[] args) {
  String[] sa = { "one", "two", "three", "four" };
  Arrays.sort(sa);
  for (String s : sa) {
   System.out.print(s + " ");
  }
  System.out.println("\none = " + Arrays.binarySearch(sa, "one"));

  System.out.println("now reverse sort");
  ReSortComparator rs = new ReSortComparator();
  Arrays.sort(sa, rs);
       
  for (String s : sa) {
   System.out.print(s + " ");
  }
  System.out.println("\none = " + Arrays.binarySearch(sa, "one"));
  System.out.println("one = " + Arrays.binarySearch(sa, "one", rs));
 }

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