Как сделать автомат сортировку массива на java?

http://www.leepoint.net/notes-java/data/arrays/70sorting.html

// File : data-arrays/dblsort/Dblsrt.java
// Purpose: To show how Arrays.sort() works with arrays
// of both primitive and object values.
// Author : Fred Swartz 2006-08-23. Public domain.

import java.util.Arrays;

public class Dblsrt {
//========================================================= main
public static void main(String[] args) {
//... 1. Sort strings - or any other Comparable objects.
String[] names = {"Zoe", "Alison", "David"};
Arrays.sort(names);
System.out.println(Arrays.toString(names));

//... 2. Sort doubles or other primitives.
double[] lengths = {120.0, 0.5, 0.0, 999.0, 77.3};
Arrays.sort(lengths);
System.out.println(Arrays.toString(lengths));
}
}