用java定义二维数组用于存储3个班级中各5名同学的姓名信息从键盘录入各班级同学的姓名信息并保存至二维数组最后通过循环的方式分别打印出班级中的同学信息

import java.util.Scanner;

public class Main { public static void main(String[] args) { String[][] students = new String[3][5];

    Scanner scanner = new Scanner(System.in);

    // 录入学生姓名
    for (int i = 0; i < 3; i++) {
        System.out.println("请输入第" + (i + 1) + "个班级的同学姓名：");
        for (int j = 0; j < 5; j++) {
            System.out.print("第" + (j + 1) + "名同学姓名：");
            students[i][j] = scanner.nextLine();
        }
    }

    // 打印学生姓名
    for (int i = 0; i < 3; i++) {
        System.out.println("第" + (i + 1) + "个班级的同学姓名：");
        for (int j = 0; j < 5; j++) {
            System.out.println(students[i][j]);
        }
    }
}