java实现获取list中随机item
2016-06-01 本文已影响3171人
stepyu
package com.yj.test.javaBases.testRandom;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
public class RandomListItem {
public static Random random = new Random();
public static void main(String[] args) {
List<String> list = new ArrayList<String>();
int i = 0;
while(i<3){
list.add(i+"");
i++;
}
for(String item: list){
System.out.println(item);
}
System.out.println("----");
int j = 0;
while(j<12){
j++;
System.out.println(list.get(random.nextInt(list.size())));
}
}
}