[Demonstration 1]

[Buggy Method]
@Override
public void initialize(URL location, ResourceBundle resources) {
    jfxLabel.setLabelFor(this);
    jfxLabel.textProperty().bind(repoProperty.asString());
    ChangeListener<Number> progressUpdater = (observable, oldValue, newValue) -> {
        long usedSpace = useableSpaceProperty.get();
        long availableSpace = totalSpaceProperty.get();
        jfxProgressBar.setProgress(availableSpace > 0 ? 1.0 - ((double) usedSpace / availableSpace) : 0);
        jfxProgressBarLabel.setText(Bundle.get("label.repos.space", Utils.bytesToString(usedSpace, false), Utils.bytesToString(availableSpace)));
    };
    useableSpaceProperty.addListener(progressUpdater);
    totalSpaceProperty.addListener(progressUpdater);
    jfxProgressBar.progressProperty().addListener((observable, oldValue, newValue) -> {
        double progress = newValue == null ? 0 : newValue.doubleValue();
        if (progress < 0.95) {
            setProgressBarStyleClass(jfxProgressBar, SPACE_AVAILABLE);
        } else {
            setProgressBarStyleClass(jfxProgressBar, SPACE_LIMITED);
        }
    });
    MenuItem browse = new MenuItem(Bundle.get("repo.browse"));
    browse.setOnAction(event -> {
        try {
            Main.getService().browse(repoProperty.get());
        } catch (Exception e) {
            LOG.error(e.getMessage(), e);
        }
    });
    contextMenu = new ContextMenu();
    contextMenu.getItems().add(browse);
}

[Buggy Hunk]
Main.getService().browse(repoProperty.get());

[Patch]
Main.service().browse(repoProperty.get());

[Demonstration 2]

[Buggy Method]
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch(item.getItemId()) {
        case R.id.add:
            Intent intent = new Intent(this, NumbersActivity.class);
            startActivity(intent);
            return true;
        case R.id.action_gps:
            // User chose the "Favorite" action, mark the current item
            // as a favorite...
            return true;
        default:
            // If we got here, the user's action was not recognized.
            // Invoke the superclass to handle it.
            return super.onOptionsItemSelected(item);
    }
}

[Buggy Hunk]
Intent intent = new Intent(this, NumbersActivity.class);

[Patch]
Intent intent = new Intent(this, AddProfileActivity.class);

[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));