New WiFi APIs on Android 10

Wifi.java

public void connect(String ssid, String password) {
    NetworkSpecifier networkSpecifier  = new WifiNetworkSpecifier.Builder()
              .setSsid(ssid)
              .setWpa2Passphrase(password)
              .setIsHiddenSsid(true) //specify if the network does not broadcast itself and OS must perform a forced scan in order to connect
              .build();
    NetworkRequest networkRequest  = new NetworkRequest.Builder()
            .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
            .setNetworkSpecifier(networkSpecifier)
            .build();
    mConnectivityManager.requestNetwork(networkRequest, mNetworkCallback);
}

public void disconnectFromNetwork(){
    //Unregistering network callback instance supplied to requestNetwork call disconnects phone from the connected network
    mConnectivityManager.unregisterNetworkCallback(mNetworkCallback);
}

private ConnectivityManager.NetworkCallback mNetworkCallback = new ConnectivityManager.NetworkCallback(){
        @Override
        public void onAvailable(@NonNull Network network) {
            super.onAvailable(network);
            //phone is connected to wifi network
        }

        @Override
        public void onLosing(@NonNull Network network, int maxMsToLive) {
            super.onLosing(network, maxMsToLive);
            //phone is about to lose connection to network
        }

        @Override
        public void onLost(@NonNull Network network) {
            super.onLost(network);
            //phone lost connection to network
        }

        @Override
        public void onUnavailable() {
            super.onUnavailable();
            //user cancelled wifi connection
        }
    };

internet is not working on connected wifi using this code