How can I check which fragment is visible in Tabbed Layout?

Question

I'm very new to Android Developing. I try to use "tabbed activity" from Android Studio templates. I added two classes (Frag1 and Frag2)

public class Frag2 extends Fragment {

@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    return inflater.inflate(R.layout.frag2_layout,container,false);
}

}

And changed the "SectionsPagerAdapter.java" code like that:

public SectionsPagerAdapter(Context context, FragmentManager fm) {
    super(fm);
    mContext = context;
}
@Override
public Fragment getItem(int position) {
    Fragment fragment = null;
    switch (position){
        case 0:
            fragment = new Frag1();
            break;
        case 1:
            fragment = new Frag2();
            break;
    }
    return fragment;
}

How can I check which fragment is visible on my phone screen? Thank you in advance!

@EDIT

According to Nizar answer (thanks a lot Nizar!)i add this:

@Override
public void setUserVisibleHint(boolean isVisibleToUser) {
    super.setUserVisibleHint(isVisibleToUser);

    if (isVisibleToUser == true){
        Log.i("xxx", "setUserVisibleHint VISIBLE");
    }else {
        Log.i("xxx", "setUserVisibleHint INVISIBLE");
    }


}

This definitely works great, but i receive report: Override deprecated method in 'androidx.fragment.app.Fragment' 'setUserVisibleHint(boolean) is deprecated..

Is this a problem ?