实验题目：

public class Main {
    public static void main(String[] args) {
        System.out.println("-----随机点名器-----");
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入你要存储学生的人数:");
        int n = sc.nextInt();
        String[] students = new String[n];
        addName(students);
        printName(students);
        randomName(students);
    }
    public static void addName(String[] students) {
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i < students.length; i++) {
            System.out.println("存储第"+(i+1)+"个姓名:");
            students[i] = sc.next();
        }
    }
    public static void printName(String[] students) {
        for (int i = 0; i < students.length; i++) {
            System.out.println("第"+(i+1)+"个学生姓名:"+students[i]);
        }
    }
    public static void randomName(String[] students) {
        Random random = new Random();
        int index = random.nextInt(students.length);
        String name = students[index];
        System.out.println("被点到名的同学是:"+name);
    }
}