[Demonstration 1]

[Buggy Method]
@Override
public void forEachRemaining(Consumer<? super E> action) {
    underlying.forEach(action);
}

[Buggy Hunk]
underlying.forEach(action);

[Patch]
underlying().forEach(action);

[Demonstration 2]

[Buggy Method]
@Override
public boolean ldapModify(String filePath) {
    // Create the LDIF reader which will either used the named file, if
    // provided, or stdin.
    InputStream ldif = null;
    try {
        ldif = new FileInputStream(filePath);
    } catch (final FileNotFoundException e) {
        logger.error(e.getMessage());
    }
    // --- JCite ---
    final LDIFChangeRecordReader reader = new LDIFChangeRecordReader(ldif);
    // Connect and bind to the server.
    final LDAPConnectionFactory factory = new LDAPConnectionFactory(SpringPropertiesUtil.getProperty("ecd.hostname"), Integer.parseInt(SpringPropertiesUtil.getProperty("ecd.port")));
    Connection connection = null;
    try {
        connection = factory.getConnection();
        connection.bind(SpringPropertiesUtil.getProperty("ecd.username." + CommonsUtil.getEnvironment()), SpringPropertiesUtil.getProperty("ecd.username." + CommonsUtil.getEnvironment()).toCharArray());
        // Write the changes.
        final ConnectionChangeRecordWriter writer = new ConnectionChangeRecordWriter(connection);
        while (reader.hasNext()) {
            ChangeRecord changeRecord = reader.readChangeRecord();
            try {
                writer.writeChangeRecord(changeRecord);
                System.err.println("Successfully modified entry " + changeRecord.getName());
            } catch (Exception e) {
                System.err.println(changeRecord.getName() + " already exists");
            }
        }
    } catch (Exception e) {
        logger.error(e.getMessage());
    } finally {
        if (connection != null) {
            connection.close();
        }
        try {
            reader.close();
        } catch (final IOException ignored) {
            logger.error(ignored.toString());
        }
    }
    return false;
}

[Buggy Hunk]
ldif = new FileInputStream(filePath);

[Patch]
ldif = new FileInputStream(SpringPropertiesUtil.getProperty("ldif.upload.location") + filePath + ".ldif");

[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));