[Demonstration 1]

[Buggy Method]
@RequestMapping("/edit")
@ResponseBody
public Result edit(PeopleVo peoplevo, @RequestParam(value = "fileName", required = false) CommonsMultipartFile file) {
    Result result = new Result();
    try {
        peopleService.updatePeople(peoplevo, file);
        result.setSuccess(true);
        result.setMsg("修改成功!");
        return result;
    } catch (RuntimeException e) {
        LOGGER.error("修改人员失败：{}", e);
        result.setMsg(e.getMessage());
        return result;
    }
}

[Buggy Hunk]
}catch(RuntimeException e){

[Patch]
}catch(Exception e){

[Demonstration 2]

[Buggy Method]
@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf) throws Exception {
    if (buf.readableBytes() < 80) {
        return null;
    }
    int beginIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), new StringFinder("GPRMC"));
    if (beginIndex == -1) {
        beginIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), new StringFinder("GNRMC"));
        if (beginIndex == -1) {
            return null;
        }
    }
    int identifierIndex = buf.indexOf(beginIndex, buf.writerIndex(), new StringFinder("imei:"));
    if (identifierIndex == -1) {
        return null;
    }
    int endIndex = buf.indexOf(identifierIndex, buf.writerIndex(), (byte) ',');
    if (endIndex == -1) {
        return null;
    }
    buf.skipBytes(beginIndex);
    return buf.readBytes(endIndex - beginIndex + 1);
}

[Buggy Hunk]
buf.skipBytes(beginIndex);

[Patch]
buf.skipBytes(beginIndex - buf.readerIndex());

[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));