String line; Pattern p = Pattern.compile("123456$"); String fichier ="10-million-combos.txt"; InputStream ips=new FileInputStream(file); InputStreamReader ipsr=new InputStreamReader(ips); BufferedReader br=new BufferedReader(ipsr); while ((line=br.readLine())!=null){ m = p.matcher(line); if (m.find()) {count2+=1;} count+=1; }