[Demonstration 1]

[Buggy Method]
@Nullable
public static GapicProductConfig create(Document document, ConfigProto configProto) {
    //    ImmutableMap<String, InterfaceConfig> interfaceConfigMap =
    //        ImmutableMap.<String, InterfaceConfig>builder()
    //            .put(document.name(), DiscoGapicInterfaceConfig.createInterfaceConfig(document))
    //            .build();
    // Get the proto file containing the first interface listed in the config proto, and use it as
    // the assigned file for generated resource names, and to get the default message namespace
    // TODO (andrealin): load messageConfigs
    ResourceNameMessageConfigs messageConfigs = null;
    // TODO (andrealin): load resourceNameConfigs
    ImmutableMap<String, ResourceNameConfig> resourceNameConfigs = ImmutableMap.of();
    LanguageSettingsProto settings = configProto.getLanguageSettings().get(configProto.getLanguage());
    if (settings == null) {
        settings = LanguageSettingsProto.getDefaultInstance();
    }
    ImmutableMap<String, InterfaceConfig> interfaceConfigMap = createInterfaceConfigMap(null, configProto, settings, null, resourceNameConfigs, new SymbolTable());
    ImmutableList<String> copyrightLines;
    ImmutableList<String> licenseLines;
    try {
        LicenseHeaderProto licenseHeader = configProto.getLicenseHeader().toBuilder().mergeFrom(settings.getLicenseHeaderOverride()).build();
        copyrightLines = getResourceLines(licenseHeader.getCopyrightFile());
        licenseLines = getResourceLines(licenseHeader.getLicenseFile());
    } catch (IOException e) {
        // TODO(andrealin): use a DiagCollector to store all the errors.
        e.printStackTrace(System.err);
        throw new RuntimeException(e);
    }
    return new AutoValue_GapicProductConfig(interfaceConfigMap, settings.getPackageName(), settings.getDomainLayerLocation(), messageConfigs, copyrightLines, licenseLines, resourceNameConfigs, createResponseFieldConfigMap(messageConfigs, resourceNameConfigs));
}

[Buggy Hunk]
createInterfaceConfigMap(null, configProto, settings, null, resourceNameConfigs, new SymbolTable());

[Patch]
createInterfaceConfigMap(null, configProto, settings, null, resourceNameConfigs, null);

[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]
public static void main(String[] args) throws SQLException {
    Connection conn = DriverManager.getConnection("jdbc:h2:./main");
    () -> {
    }.start();
    Statement stmt = conn.createStatement();
    stmt.execute("CREATE TABLE id IDENTITY, username VARCHAR, address VARCHAR, email VARCHAR");
}

[Buggy Hunk]
().start();

[Patch]
Server.createWebServer().start();