eerror handling

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class RemoveComments {
    public static void main(String[] args) {
        String inputFile = "input.java";
        String outputFile = "output.java";

        try (BufferedReader reader = new BufferedReader(new FileReader(inputFile));
             FileWriter writer = new FileWriter(outputFile)) {
            String line;
            while ((line = reader.readLine()) != null) {
                line = line.replaceAll("//.*|/\\*.*?\\*/", "");
                if (!line.trim().isEmpty()) {
                    writer.write(line + System.lineSeparator());
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}