public class Test02 {    public static void main(String[] args) {        // 用二维数组表示的学生成绩:        int[][] scores = {                { 82, 90, 91 },                { 68, 72, 64 },                { 95, 91, 89 },                { 67, 52, 60 },                { 79, 81, 85 },        };        // TODO:        double average = 0;        double sum = 0;        int count = 0;        for (int[] stu : scores) {            for (int score : stu) {                sum = sum + score;                count++;            }        }        average = sum/count;        System.out.println(average);        if (Math.abs(average - 77.733333) < 0.000001) {            System.out.println("测试成功");        } else {            System.out.println("测试失败");        }    }}