Java随机点名器程序实现 - 完整代码示例

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

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

    // 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] = input.nextLine();
    }

    // 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;
    }

    // 循环打印出数组中同学的姓名
    for (int i = 0; i < names.length; i++) {
        System.out.println(names[i]);
    }

    // 随机打印出一个同学的姓名
    int index = rand.nextInt(names.length);
    System.out.println("随机点名结果：" + names[index]);
}

}