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())));
    }
}
}

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