Java 随机点名器程序代码示例

import java.util.Scanner; import java.util.Random;

public class RandomNamePicker { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); String[] names = new String[6];

    // 存储全班同学姓名
    for (int i = 0; i < names.length; i++) {
        System.out.print("请输入第" + (i+1) + "个同学的姓名：");
        names[i] = scanner.next();
    }

    // 将数组中的元素对调
    for (int i = 0; i < names.length/2; i++) {
        String temp = names[i];
        names[i] = names[names.length-1-i];
        names[names.length-1-i] = temp;
    }

    // 打印出数组中同学的姓名
    System.out.println("班级同学的姓名如下：");
    for (String name : names) {
        System.out.println(name);
    }

    // 随机选取一个同学
    Random random = new Random();
    int randomIndex = random.nextInt(names.length);
    System.out.println("随机选择的同学是：" + names[randomIndex]);
}

}