Wie vermeide ich unerwartete Probleme beim Erstellen von JAR-Dateien mit Javas JarOutputStream?

<code class="java">public void run() throws IOException {
    // Prepare the manifest file
    Manifest manifest = new Manifest();
    manifest.getMainAttributes().put(Attributes.Name.MANIFEST_VERSION, "1.0");

    // Create a new JAROutputStream with the manifest
    JarOutputStream target = new JarOutputStream(new FileOutputStream("output.jar"), manifest);

    // Iterate over the source directory and add files to the JAR
    add(new File("inputDirectory"), target);

    // Close the JAROutputStream
    target.close();
}

private void add(File source, JarOutputStream target) throws IOException {
    // Prepare the entry path
    String name = source.getPath().replace("\", "/");

    // Handle directories
    if (source.isDirectory()) {
        if (!name.endsWith("/")) {
            name += "/";
        }
        // Create a directory entry with appropriate timestamps
        JarEntry entry = new JarEntry(name);
        entry.setTime(source.lastModified());
        target.putNextEntry(entry);
        target.closeEntry();

        // Recursively add files within the directory
        for (File nestedFile : source.listFiles()) {
            add(nestedFile, target);
        }
    } 
    // Handle files
    else {
        // Create a file entry with appropriate timestamps
        JarEntry entry = new JarEntry(name);
        entry.setTime(source.lastModified());
        target.putNextEntry(entry);

        // Read and write the file contents to the JAR
        try (BufferedInputStream in = new BufferedInputStream(new FileInputStream(source))) {
            byte[] buffer = new byte[1024];
            while (true) {
                int count = in.read(buffer);
                if (count == -1)
                    break;
                target.write(buffer, 0, count);
            }
            target.closeEntry();
        }
    }
}</code>