Java 数组 之 二维数组

​

public class BinaryArray {

    public static void main(String[] args) {
        //二维数组定义和初始化
        int[][] arrs = { { 1, 2, 3 }, { 4, 5, 6 }, { 6, 8, 9 } };
        //二维数组遍历输出
        for (int i = 0; i < arrs.length; i++) {
            for (int j = 0; j < arrs[i].length; j++) {
                System.out.print(arrs[i][j]);
            }

            System.out.println("");
        }

        //增强for循环 是jdk 5.0 以后才有的新的特性
        String[] names = { "黎明", "张胜", "李阳" };
        for (String name : names) {
            System.out.print(name + ",");
        }

        //定义一个课程的二维表结构
        String[][] courses = { { "C001", "英语" }, { "C002", "数学" }, { "C003", "Java编程" } };
        System.out.println("\n---------------------");
        //输出
        for (String[] rows : courses) {
            for (String col : rows) {
                System.out.print(col + ",");
            }
            System.out.println("");
        }
    }
}

​