import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

public class DirectoryArchiver {

public static void archiveDirectory(String sourceDir, String destinationFile) {

File source = new File(sourceDir);

if (!source.exists() || !source.isDirectory()) {

System.err.println("Error: Source directory does not exist or is not a directory.");

return;

}

try (BufferedWriter writer = new BufferedWriter(new FileWriter(destinationFile))) {

List<String> files = listFiles(source);

for (String file : files) {

String filePath = source.getAbsolutePath() + "/" + file; // Construct full path

try(BufferedReader reader = new BufferedReader(new FileReader(filePath))) {

String line;

while ((line = reader.readLine()) != null) {

writer.write(line);

writer.newLine();

}

}

}

} catch (IOException e) {

System.err.println("Error archiving directory: " + e.getMessage());

}

}

private static List<String> listFiles(File dir) {

List<String> fileList = new ArrayList<>();

File[] files = dir.listFiles();

if (files != null) {

for (File file : files) {

if (file.isFile()) {

fileList.add(file.getName());

} else if (file.isDirectory()) {

// Optionally recursively archive subdirectories

//fileList.addAll(listFiles(file));

}

}

}

return fileList;

}

public static void main(String[] args) {

String sourceDirectory = "source_directory"; // Replace with your source directory

String destinationFile = "archive.txt"; // Replace with your desired destination file

archiveDirectory(sourceDirectory, destinationFile);

System.out.println("Directory archived to " + destinationFile);

}

}