java list随机取值

public static void main(String[] args) {

List<String> list = new ArrayList<String>();

List<String> randomList = new ArrayList<String>();

创建有顺序的list

for (int i = 0; i < 10; i++) {

list.add(i, String.valueOf(i));

               }

for (String i : list) {

System.out.println("输出的数字为"+i);

                          }

//循环三次输出打乱的list

for (int k = 0; k <3; k++) {

//removeListElement(list,5);

randomList = randomListElement(list,5);

System.out.println("打乱之后的顺序为----------");

for (String i : randomList) {

System.out.println("打乱之后输出的数字为"+i);

                              }

                     }

            }

private static List<String> randomListElement(List<String> list, int i) {

List<String> randomList = new ArrayList<String>();

//随机打乱list

Collections.shuffle(list);

for (int j = 0; j <i; j++) {

randomList.add(list.get(j));

       }

return randomList;

  }