[Demonstration 1]

[Buggy Method]
public File[] getParentSources() {
    try {
        List<File> files = new ArrayList<File>();
        for (URL url : mainClassLoader.getSources()) {
            URI uri = url.toURI();
            if (uri.getScheme() == "file") {
                files.add(new File(uri));
            }
        }
        return files.toArray(new File[] {});
    } catch (URISyntaxException e) {
        FMLLog.log(Level.ERROR, e, "Unable to process our input to locate the minecraft code");
        throw new LoaderException(e);
    }
}

[Buggy Hunk]
if(uri.getScheme() == "file")

[Patch]
if(uri.getScheme().equals("file"))

[Demonstration 2]

[Buggy Method]
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
    final SQLiteDatabase db = mOpenHelper.getWritableDatabase();
    final int match = sUriMatcher.match(uri);
    int rowsDeleted;
    // this makes delete all rows return the number of rows deleted
    if (null == selection)
        selection = "1";
    switch(match) {
        case STORY:
            rowsDeleted = db.delete(MySubsContract.StoryEntry.TABLE_NAME, selection, selectionArgs);
            break;
        case SUBREDDIT:
            rowsDeleted = db.delete(MySubsContract.SubredditEntry.TABLE_NAME, selection, selectionArgs);
            break;
        default:
            throw new UnsupportedOperationException("Unknown uri: " + uri);
    }
    // Because a null deletes all rows
    if (rowsDeleted != 0) {
        getContext().getContentResolver().notifyChange(uri, null);
    }
    return rowsDeleted;
}

[Buggy Hunk]
public int delete(Uri uri, String selection, String[] selectionArgs) {

[Patch]
public int delete(@NonNull Uri uri, String selection, String[] selectionArgs) {

[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));