[Demonstration 1]

[Buggy Method]
private Map<String, Raum> extractRaume(Scanner scanner) {
    Map<String, Raum> returnMap = new HashMap<String, Raum>();
    Map<String, Integer> headerIndices = new HashMap<String, Integer>();
    while (scanner.hasNextLine()) {
        String line = scanner.nextLine();
        String[] values = line.split(",");
        if (headerIndices.isEmpty()) {
            for (int i = 0; i < values.length; i++) {
                headerIndices.put(values[i], i);
            }
        } else {
            Raum raum = getRaumFromValuesWithHeaderIndices(values, headerIndices);
            if (raum != null) {
                returnMap.put(raum.name, raum);
            }
        }
    }
    return returnMap;
}

[Buggy Hunk]
String[] values = line.split(",");

[Patch]
String[] values = line.split(",", -1);

[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]
private List<Restriction> getRescritions() {
    // select * from table where field='val'
    // extract where conditions
    String queryString = queryParameter.getQueryString();
    List<Restriction> restrictions = null;
    if (queryString.contains("where")) {
        String whereClauseQuery = queryString.split("where")[1];
        String[] expressions = whereClauseQuery.split("\\s+and\\s+|\\s+or\\s+");
        String propertyName;
        String propertyValue;
        String condition;
        Restriction restriction;
        String[] propertyNameAndValue;
        restrictions = new ArrayList<Restriction>();
        if (whereClauseQuery != null) {
            for (String expression : expressions) {
                expression = expression.trim();
                // propertyNameAndValue =
                // expression.split("\\s+<\\s+=|\\s+>\\s+=\\s+|\\s+!\\s+=\\s+|\\s+<\\s+|\\s+>\\s+");
                propertyNameAndValue = expression.split("<=|>=|!=|<|>|=");
                propertyName = propertyNameAndValue[0].trim();
                propertyValue = propertyNameAndValue[1].trim().replace("'", "");
                // salary<10000
                condition = expression.split(propertyName)[1].trim().split(propertyValue)[0].replace("'", "");
                restriction = new Restriction(propertyName, propertyValue, condition);
                restrictions.add(restriction);
            }
        }
    }
    return restrictions;
}

[Buggy Hunk]
String whereClauseQuery = queryString.split("where")[1];

[Patch]
String whereClauseQuery = queryString.split("where")[1].split("order by")[0].split("group by")[0];