Arrays 클래스를 이용한 배열 정렬 010

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

public class ArraysTest011 {
public static void main(String[] args) {
Integer[] IntegerAr = {33,22,11,55,44,66,99,88,77};

System.out.println(Arrays.toString(IntegerAr));

Arrays.sort(IntegerAr);
System.out.println(Arrays.toString(IntegerAr));

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