#vulnerable code 
                                public static String[] getBlockedInterfaces() {
        if (!interfaceFiltersinitialized)
        {
            try
            {
                initializeInterfaceFilters();
            }
            catch (Exception e)
            {
                logger.log(Level.WARNING, "There were errors during host " +
                        "candidate interface filters initialization.", e);
            }
        }

        return blockedInterfaces;
    } 
                            #location 2 
                            #vulnerability type THREAD_SAFETY_VIOLATION
#fixed code
                                public static String[] getBlockedInterfaces() {
        if (!interfaceFiltersInitialized)
        {
            try
            {
                initializeInterfaceFilters();
            }
            catch (Exception e)
            {
                logger.log(Level.WARNING, "There were errors during host " +
                        "candidate interface filters initialization.", e);
            }
        }

        return blockedInterfaces;
    }