what is wrong?

package pl.codegym.task.task09.task0921;

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

/*
Metoda w try-catch
*/

public class Solution {
    public static void main(String[] args) {
        czytajDane();
    }

    public static void czytajDane() {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        int s = 0;
        String l = "";
        ArrayList <Integer> liczby = new ArrayList <Integer>();
        while (l.isEmpty()){
           try{
            l = reader.readLine();
            s = Integer.parseInt(l);
            l="";

            liczby.add(s);
            }
            catch(NumberFormatException e){
                break;
                }
            catch(IOException e){
                break;
            }
                for (int i = 0; i < liczby.size(); i++){
                    System.out.println(liczby.get(i));
            }


        }
    }
}