val outputPath = projectDir.resolve("mylib.jar")
        Files.newOutputStream(outputPath).use { outputStream ->
            JarOutputStream(outputStream).use { jarStream ->
                sourceFiles.forEach { dir ->
                    check(Files.isDirectory(dir)) { "Must be a directory" }
                    Files.walkFileTree(dir, object : SimpleFileVisitor<Path>() {

                Path tempDir = Files.createTempDirectory("smbtest");

                // Create directory structure
                Files.createDirectories(tempDir.resolve("public"));
                Files.createDirectories(tempDir.resolve("shared"));

                // Create some initial files
                Files.writeString(tempDir.resolve("public/readme.txt"), "This is a public share for testing");

            Path projectDir = tempDir.resolve("project");
            Files.createDirectories(projectDir);

            Path mvnDir = projectDir.resolve(".mvn");
            Files.createDirectories(mvnDir);
            Path existingFile = mvnDir.resolve("existing.txt");
            Files.writeString(existingFile, "existing content");

            UpgradeContext context = createMockContext(projectDir);

        Path dotMvn = cwd.resolve(".mvn");
        Files.createDirectories(dotMvn);
        Path projectExtensions = dotMvn.resolve("extensions.xml");
        Files.writeString(projectExtensions, extensionsXml);

        Path userConf = userHome.resolve(".m2");
        Files.createDirectories(userConf);
        Path userExtensions = userConf.resolve("extensions.xml");
        Files.writeString(userExtensions, extensionsXml);

# intellij files
.idea/
*.iml
*.ipr
*.iws
build-idea/
# Eclipse and Intellij put there build files in "out"
out/

# include shared intellij config
!.idea/scopes/x_pack.xml
!.idea/inspectionProfiles/Project_Default.xml
!.idea/runConfigurations/Debug_Elasticsearch.xml
!.idea/checkstyle-idea.xml

# These files are generated in the main tree by IntelliJ
benchmarks/src/main/generated/*

# eclipse files
.project

            return ZipInputStream(Files.newInputStream(file))
        }
    }

    /**
     * Implementation code that can be unit-tested.
     *
     * <p>Visible for testing.</p>
     */
    class Implementation(private val excludes: List<String>, private val includes: List<String>) {
        fun collectPackages(files: Iterable<Path>): Trie {
            val builder = Trie.Builder()

If your app needs to receive and send JSON data, but you need to include binary data in it, you can encode it as base64.

## Base64 vs Files { #base64-vs-files }

Consider first if you can use [Request Files](../tutorial/request-files.md) for uploading binary data and [Custom Response - FileResponse](./custom-response.md#fileresponse--fileresponse-) for sending binary data, instead of encoding it in JSON.

                    final File[] files = file.listFiles();
                    if (files != null) {
                        if (logger.isDebugEnabled()) {
                            logger.debug("Found {} child entries in directory: directory={}", files.length, file.getAbsolutePath());
                        }
                        for (final File f : files) {

# Static Files - `StaticFiles`

You can use the `StaticFiles` class to serve static files, like JavaScript, CSS, images, etc.

Read more about it in the [FastAPI docs for Static Files](https://fastapi.tiangolo.com/tutorial/static-files/).

You can import it directly from `fastapi.staticfiles`:

```python
from fastapi.staticfiles import StaticFiles
```

/**
 * Static utilities for use with {@link Path} instances, intended to complement {@link Files}.
 *
 * <p>Many methods provided by Guava's {@code Files} class for {@link java.io.File} instances are
 * now available via the JDK's {@link java.nio.file.Files} class for {@code Path} - check the JDK's
 * class if a sibling method from {@code Files} appears to be missing from this class.
 *
 * @since 33.4.0 (but since 21.0 in the JRE flavor)