[Demonstration 1]

[Buggy Method]
public boolean uploadFileToServer(File original, String summary, UploadCredentials credentials) throws IOException {
    double originalLength = (double) original.length() / MB;
    MessageFormat dateFormat = new MessageFormat("{0,date,dd.MM.yyyy}", Locale.US);
    MessageFormat numberFormat = new MessageFormat("{0,number,##.#}", Locale.US);
    String size = numberFormat.format(new Object[] { originalLength });
    String date = dateFormat.format(new Object[] { new Date(original.lastModified()) });
    try {
        if (credentials instanceof UploadToGoogleCodeCredentials) {
            String descriptionFile = "{" + date + " : " + size + " MB}";
            summary += " " + descriptionFile;
            List<File> splittedFiles = Collections.emptyList();
            try {
                splittedFiles = splitFiles(original);
                for (File fs : splittedFiles) {
                    uploadToGoogleCode(fs, summary, (UploadToGoogleCodeCredentials) credentials);
                }
            } finally {
                // remove all splitted files
                for (File fs : splittedFiles) {
                    if (!fs.equals(original)) {
                        fs.delete();
                    }
                }
            }
        } else if (credentials instanceof UploadCredentials) {
            uploadToSSH(original, summary, size, date, (UploadSSHCredentials) credentials);
        } else {
            uploadToFTP(original, summary, size, date, credentials);
        }
    } catch (IOException e) {
        log.error("Input/output exception uploading " + original.getName(), e);
        return false;
    } catch (JSchException e) {
        log.error("Input/output exception uploading " + original.getName(), e);
        return false;
    }
    return true;
}

[Buggy Hunk]
} else if(credentials instanceof UploadCredentials){

[Patch]
} else if(credentials instanceof UploadSSHCredentials){

[Demonstration 2]

[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));

[Demonstration 3]

[Buggy Method]
@Override
public boolean shouldSkip(Throwable t, int skipCount) throws SkipLimitExceededException {
    if (t == null) {
        return false;
    }
    if (skipCount > skipLimit) {
        logger.info("skip limit exceed for the skip", t.getMessage());
        return false;
    }
    while (t != null) {
        if (t instanceof CompanyDataNotFound) {
            return true;
        }
        t = t.getCause();
    }
    return false;
}

[Buggy Hunk]
if (t instanceof CompanyDataNotFound) {

[Patch]
if (t instanceof CompanyDataNotFound || t instanceof CompanyDataUpdateException) {