#fixed code
                                @SuppressWarnings("unchecked")
    public void init() throws Exception {
        initWorldConnectedServer();
        initGameConnectedServer();
        initDbConnectServer();
    }
#vulnerable code 
                                @SuppressWarnings("unchecked")
    public void init() throws Exception {

        Element rootElement = JdomUtils.getRootElemet(FileUtil.getConfigURL(GlobalConstants.ConfigFile.RPC_SERVER_CONFIG).getFile());

        Map<Integer, SdServer> serverMap = new HashMap<>();

        List<SdServer> sdWorldServers = new ArrayList<SdServer>();
        Element element = rootElement.getChild(BOEnum.WORLD.toString().toLowerCase());
        List<Element> childrenElements = element.getChildren("server");
        for (Element childElement : childrenElements) {
            SdServer sdServer = new SdServer();
            sdServer.load(childElement);
            sdWorldServers.add(sdServer);
        }

        List<SdServer> sdGameServers = new ArrayList<SdServer>();
        element = rootElement.getChild(BOEnum.GAME.toString().toLowerCase());
        childrenElements = element.getChildren("server");
        for (Element childElement : childrenElements) {
            SdServer sdServer = new SdServer();
            sdServer.load(childElement);
            sdGameServers.add(sdServer);
        }

        List<SdServer> sdDbServers = new ArrayList<SdServer>();
        element = rootElement.getChild(BOEnum.DB.toString().toLowerCase());
        childrenElements = element.getChildren("server");
        for (Element childElement : childrenElements) {
            SdServer sdServer = new SdServer();
            sdServer.load(childElement);
            sdDbServers.add(sdServer);
        }

        synchronized (this.lock) {
            this.sdWorldServers = sdWorldServers;
            this.sdGameServers = sdGameServers;
            this.sdDbServers = sdDbServers;
        }

        initWorldConnectedServer();
        initGameConnectedServer();
        initDbConnectServer();


        SdRpcServiceProvider sdRpcServiceProvider = new SdRpcServiceProvider();
        rootElement = JdomUtils.getRootElemet(FileUtil.getConfigURL(GlobalConstants.ConfigFile.RPC_SERVEICE_CONFIG).getFile());
        childrenElements = rootElement.getChildren("service");
        for (Element childElement : childrenElements) {
            sdRpcServiceProvider.load(childElement);
        }

        synchronized (this.lock) {
            this.sdRpcServiceProvider = sdRpcServiceProvider;
        }
    } 
                            #location 43 
                            #vulnerability type THREAD_SAFETY_VIOLATION