package com.codegym.task.task19.task1908; /* Picking out numbers */ import java.io.*; import java.util.ArrayList; public class Solution { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String a = br.readLine(); String b = br.readLine(); br.close(); FileReader fr = new FileReader(a); BufferedReader br1 = new BufferedReader(new FileReader(a)); fr.close(); br1.close(); FileWriter fw = new FileWriter(b); BufferedWriter bw = new BufferedWriter(new FileWriter(b)); fw.close(); bw.close(); ArrayList<Integer> fileNumbers = new ArrayList<>(); while (br1.ready()) { String str = br1.readLine(); String intValue = str.replaceAll("[^0-9]", ""); bw.write(intValue); } } }