why am i getting error???

package com.codegym.task.task07.task0722;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.*;

/*
The end

*/

public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        ArrayList<String> list = new ArrayList<String>();
for(int i = 0;i < 0;i++){
    System.out.print("");
}
        while(true)
        {String a = reader.readLine();
            if(a .equals("end"))
                break;
            else
                list.add(a);
        }
        Iterator itr = list.iterator();
        while(itr.hasNext())
        {

            System.out.println(itr.next());
        }
    }
}