ViewPager

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.google.android.material.tabs.TabLayout
        android:id="@+id/tabLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/pager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>

fragment_demo.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".DemoFragment">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="1"
        android:textSize="45sp"
        />

</RelativeLayout>

public class DemoFragment extends Fragment {


    public static final String TITLE = "title";

    public DemoFragment() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_demo, container, false);
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        TextView textView = (TextView) view.findViewById(R.id.textView);
        textView.setText(getArguments().getString(TITLE));

    }
}

public class AdapterDemo extends FragmentStateAdapter {
    public AdapterDemo(@NonNull FragmentManager fragmentManager, @NonNull Lifecycle lifecycle) {
        super(fragmentManager, lifecycle);
    }

    @NonNull
    @Override
    public Fragment createFragment(int position) {
        Fragment fragment = new DemoFragment();
        Bundle args = new Bundle();
        args.putString(DemoFragment.TITLE, "Tab "+(position+1));
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public int getItemCount() {
        return 3;
    }
}

public class MainActivity extends AppCompatActivity {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TabLayout tabLayout = (TabLayout) findViewById(R.id.tabLayout);
        ViewPager2 viewPager2 = (ViewPager2) findViewById(R.id.pager);

        AdapterDemo adapterDemo = new AdapterDemo(getSupportFragmentManager(),getLifecycle());
        viewPager2.setAdapter(adapterDemo);

        new TabLayoutMediator(tabLayout, viewPager2, new TabLayoutMediator.TabConfigurationStrategy() {
            @Override
            public void onConfigureTab(@NonNull TabLayout.Tab tab, int position) {
                tab.setText("Tab "+ (position+1));
            }
        }).attach();
    }
}

참조
https://www.youtube.com/watch?v=VxsYMeTMClU