Displaying the loading state in Fragment with Android paging 3 java

Question

I am trying to use jetpack android's new paging 3 library, to implement paging in my application. A lot of documentation and examples is for kotlin, I am writing in java and I am having difficulty. In particular I would like to show a progress bar throughout the fagment view while the list of items is being loaded or updated.

I found this example from the official documentation, but I can't figure out how to implement it in java and in my case: https://developer.android.com/codelabs/android-paging#10

This way I am inserting an adapter to my recyclerview (an adapter is for adding the progress bar at the end of the recyclerview):

binding.recyclerView.setAdapter(
                // concat flyer adapter with header and footer loading view
                // This will show end user a progress bar while pages are being requested from server
                flyerAdapter.withLoadStateFooter(
                        // Pass footer load state adapter.
                        // When we will scroll down and next page request will be sent
                        // while we get response form server Progress bar will show to end user
                        // If request success Progress bar will hide and next page of movies
                        // will be shown to end user or if request will fail error message and
                        // retry button will be shown to resend the request
                        new FlyersLoadStateAdapter(v -> {
                            flyerAdapter.retry();
                        })));

What I try to do is also add a progressbar that hides the recyclerview when I download data from the network and populate the recyclerview or in cases of error. Any idea how to do this?