LW08

package com.company;

import java.io.*;

public class Main {

    public static void main(String[] args) {
        try {
            printFnames("C:\\Users\\Евгений\\Desktop\\Projects\\junit5-master\\junit-platform-runner\\src\\main\\java\\org\\junit\\platform\\runner");
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        }
    }

    public static void printFnames(String sDir) throws Exception {
        File[] faFiles = new File(sDir).listFiles();
        for (File file : faFiles) {
            if (file.getName().matches(".*\\.java")) {
                char[] data = new char[(int)file.length()];
                new FileReader(file.getAbsolutePath())
                    .read(data, 0, data.length);

                String code = getStringFromCharArray(data);

                FileWriter writer = new FileWriter(file.getAbsolutePath());
                writer.write(code.trim().replaceAll(" +", " "));
                System.out.println(file.getAbsolutePath());
                writer.close();
            }

            if (file.isDirectory()) {
                printFnames(file.getAbsolutePath());
            }
        }
    }

    public static String getStringFromCharArray(char[] array) {
        String result = "";
        for (int i = 0; i < array.length; i++)
            result += array[i];
        return result;
    }
}