班级里有100个人用JAVA写一个随机抽签的代码

import java.util.ArrayList; import java.util.Collections; import java.util.Random;

public class DrawLots { public static void main(String[] args) { ArrayList list = new ArrayList(); for (int i = 1; i <= 100; i++) { list.add(i); } Collections.shuffle(list, new Random(System.currentTimeMillis())); System.out.println("中奖号码为：" + list.get(0)); } }