[Demonstration 1]

[Buggy Method]
public TaskData createTask(String task, Long userId) {
    TaskData data = new TaskData(task, userId);
    data.setDueDate(new Date());
    data.setNotes("This is a Sample Test Task");
    return data;
}

[Buggy Hunk]
data.setDueDate(new Date());

[Patch]
data.setDueDate(new DateTime());

[Demonstration 2]

[Buggy Method]
public Long on(JobMeta jobMeta) {
    boolean comingDirectlyFromSyncSide = false;
    Class<? extends IEvent> eventClass = JobDefinitions.getEventForDTO(jobMeta.getPayloads().get(0));
    AbstractEvent event;
    try {
        event = (AbstractEvent) eventClass.newInstance();
    } catch (Exception e) {
        logger.error("Unable to instantiate Event class '{}'", eventClass.getSimpleName());
        return -1L;
    }
    event.setPayloads(jobMeta.getPayloads());
    if (jobMeta.getJobId() == null) {
        comingDirectlyFromSyncSide = true;
        Job job = new Job();
        job.setPayloads(jobMeta.getPayloads());
        job.setParentId(jobMeta.getParentJobId());
        jobRepository.save(job);
        jobMeta.setJobId(job.getID());
        ContextStore.put(jobMeta.getUser(), jobMeta.getJobId(), jobManager.registerNewTransactionLeg(jobMeta.getJobId()));
        jobMeta.setLegId(ContextStore.getLegId());
    }
    event.setJobId(jobMeta.getJobId());
    event.setUser(jobMeta.getUser());
    event.setLegId(jobMeta.getLegId());
    if (jobMeta.isAsynchronous()) {
        asynchSideEndPoints.routeToJms(event);
    } else {
        if (comingDirectlyFromSyncSide) {
            publisher.publishEvent(event);
        }
        asynchSideEndPoints.routeToDynamicRouter(event);
    }
    return event.getJobId();
}

[Buggy Hunk]
ContextStore.put(jobMeta.getUser(), jobMeta.getJobId(), jobManager.registerNewTransactionLeg(jobMeta.getJobId()));

[Patch]
ContextStore.put(jobMeta.getUser(), jobMeta.getJobId(), jobManager.registerNewTransactionLeg(jobMeta.getJobId(), 0L));

[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));