[Demonstration 1]

[Buggy Method]
@ApiOperation(value = "get all 3D hotspot mutations", nickname = "fetch3dHotspotMutationsPOST")
@RequestMapping(value = "/hotspots/3d", method = { RequestMethod.POST }, produces = "application/json")
public List<HotspotMutation> fetch3dHotspotMutationsPOST(@ApiParam(value = "Comma separated list of hugo symbols. For example PTEN,BRAF,TP53", required = false, allowMultiple = true) @RequestParam(required = false) List<String> hugoSymbols) {
    if (hugoSymbols == null || hugoSymbols.size() == 0) {
        return multiResidueHotspotMutationService.getAllHotspotMutations();
    } else {
        return fetch3dHotspotMutationsByGeneGET(hugoSymbols);
    }
}

[Buggy Hunk]
method = {RequestMethod.POST},

[Patch]
method = {RequestMethod.POST, RequestMethod.GET},

[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]
@RequestMapping(value = "/complaints/{cid}", method = RequestMethod.POST)
public SimpleResponse verifyComplaint(@PathVariable int cid, @RequestBody String status) {
    if (status == "处理中" || status == "审核被驳") {
        int i = complaintService.verifyComplaint(cid, status);
        return i == 1 ? new SimpleResponse("审核成功", "success") : new SimpleResponse("审核失败", "fail");
    } else {
        return new SimpleResponse("传入参数有误", "error");
    }
}

[Buggy Hunk]
if(status=="处理中" || status=="审核被驳"){

[Patch]
if(status.equals("处理中") || status.equals("审核被驳")){