[Demonstration 1]

[Buggy Method]
private void loadLocalFile(File file) {
    if (file == null) {
        return;
    }
    if (file.exists()) {
        if (file.isFile()) {
            String root = this.getFilesDir();
            String path = file.getAbsolutePath();
            String name = path.substring(root.length());
            LocalFile localFile = new LocalFile();
            localFile.id = GLOBAL_ID++;
            localFile.name = name;
            this.files.put(localFile.id, localFile);
        } else if (file.isDirectory()) {
            for (File f : file.listFiles()) {
                this.loadLocalFile(f);
            }
        }
    }
}

[Buggy Hunk]
String root = this.getFilesDir();

[Patch]
String root = new File(this.getFilesDir()).getAbsolutePath();

[Demonstration 2]

[Buggy Method]
public long[] cacheSize() {
    int size = 0;
    int count = 0;
    for (File f : getMapCacheFolder().listFiles()) {
        size += f.length();
        count++;
    }
    return new long[] { count, size };
}

[Buggy Hunk]
for(File f: getMapCacheFolder().listFiles()) {

[Patch]
for(File f: listFilesSafe(getMapCacheFolder())) {

[Demonstration 3]

[Buggy Method]
public static Result service(String ownerName, String projectName, String service, boolean isAdvertise) throws IOException, UnsupportedOperationException, ServletException {
    if (!isSupportedService(service)) {
        return forbidden(String.format("Unsupported service: '%s'", service));
    }
    Project project = Project.findByOwnerAndProjectName(ownerName, projectName);
    if (project == null) {
        return notFound();
    }
    models.User user = UserApp.currentUser();
    if (!isAllowed(project, service)) {
        if (user.isAnonymous()) {
            return BasicAuthAction.unauthorized(response());
        } else {
            // If you want the Git client showing your custom message to
            // the user, the Content-Type should be exact "text/plain"
            // without any parameter. For more details, see the code at
            // https://github.com/git/git/commit/426e70d4a11ce3b4f70636d57c6a0ab16ae08a00#diff-eea0ad565ec5903a11b6023755d491cfR154
            response().setHeader("Content-Type", "text/plain");
            return forbidden(String.format("'%s' has no permission to '%s/%s'.", user.name, ownerName, projectName));
        }
    }
    if (isAdvertise) {
        return ok(RepositoryService.gitAdvertise(project, service, response()));
    } else {
        if (request().body().isMaxSizeExceeded()) {
            return status(REQUEST_ENTITY_TOO_LARGE);
        } else {
            user.visits(project);
            return ok(RepositoryService.gitRpc(project, service, request(), response()));
        }
    }
}

[Buggy Hunk]
user.name, ownerName, projectName));

[Patch]
user.loginId, ownerName, projectName));