что не так?
package com.javarush.task.task07.task0717;
import java.util.ArrayList;
import java.io.*;
import java.util.Collections;
/*
Удваиваем слова
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader read = new BufferedReader(new InputStreamReader(System.in));
ArrayList<String> list = new ArrayList <>();
for (int i = 0; i < 10; i++)
list.add(read.readLine());
ArrayList<String> result = doubleValues(list);
for (int i = 0; i < result.size(); i++)
System.out.println(result.get(i));
}
public static ArrayList<String> doubleValues(ArrayList<String> list) {
list = new ArrayList<>();
for (int i = 0; i < list.size(); i++)
list.add(list.get(i));
Collections.sort(list);
return list;
}
}