There are often built-in sort "routines" in Java compiler packages, such as Arrays.sort ( ).  It is imperative that you, the programmer, know and understand at least one method of sorting an array, separate from a built in "routine", for test taking purposes. 

// short demo to show built-in sorting routine at work
import java.io.*;
import java.util.Arrays;  //notice the new required import statement
import BreezyGUI.*;

public class SortTest {    public static void main(String[] args)    {       //Sorting integers       int[ ] nums = {15, 10, 7, 13, 9};       Arrays.sort(nums);    //use the built-in sorting routine       for (int i = 0; i < 5; i++)          System.out.println(nums[ i ]);       //Sorting strings       String[ ] people = {"Tom", "Ed", "Al", "Tim"};       Arrays.sort(people);    //use the built-in sorting routine       for (int i = 0; i < 4; i++)          System.out.println(people[ i ]);    } }