java中Comparator介面的用法

/** * 功能：通過對一個整形數組進行排序，來瞭解Comparator用法 *  * @author wangchangshuai0010 山東科技大學 2013年2月7日 0:05 */package test;import java.io.BufferedInputStream;import java.util.Arrays;import java.util.Comparator;import java.util.Scanner;public class Test{private class MyComparator implements Comparator<Integer>{@Overridepublic int compare(Integer o1, Integer o2){if (o1 > o2){return 1;}else if (o1 < o2){return -1;}else{return 0;}}}public static void main(String[] args){Test main = new Test();MyComparator mComparator = main.new MyComparator();Scanner cin = new Scanner(new BufferedInputStream(System.in));System.out.println("請輸入數組的長度：");int count = cin.nextInt();Integer A[] = new Integer[count];System.out.println("請依次輸入這 " + count + " 個數：");for (int i = 0; i < A.length; i++){A[i] = cin.nextInt();}Arrays.sort(A, mComparator);System.out.println("排序結果如下：");for (int i = 0; i < A.length; i++){System.out.print(A[i] + " ");}}}