How to use Fragments in an Android app?

        // Step 1: Create a Fragment class
        public class MyFragment extends Fragment {
            @Nullable
            @Override
            public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
                // Inflate the layout file for this fragment
                return inflater.inflate(R.layout.fragment_my, container, false);
            }
        }

        // Step 2: Add Fragment to Activity
        public class MainActivity extends AppCompatActivity {
            @Override
            protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_main);
                
                // Check if the fragment container is available
                if (savedInstanceState == null) {
                    getSupportFragmentManager()
                        .beginTransaction()
                        .add(R.id.fragment_container, new MyFragment())
                        .commit();
                }
            }
        }