Валик не принимает, ткните пальцем.
package com.javarush.task.task19.task1923;
import java.io.*;
/*
Слова с цифрами
*/
public class Solution {
public static void main(String[] args) throws IOException {
String file1 = "";
String file2 = "";
if (args != null) {
try (BufferedReader fileReader = new BufferedReader(new FileReader(args[0]));
FileWriter fileWriter = new FileWriter(args[1], true)) {
while (fileReader.ready()) {
String dataLine = fileReader.readLine();
String[] str = dataLine.split(" ");
for (String world : str) {
boolean isNumber = false;
String check = world.replaceAll("\\D", " ").replaceAll(" ", "");
try {
Integer.parseInt(check);
isNumber = true;
} catch (Exception ignore) {
}
if (isNumber) {
fileWriter.write(world + " ");
}
}
}
}
}
}
}