Material BottomAppBar - events

Question

I am trying to build a functional BottomAppBar in Android Java.
All it seems to work except that I don´t know how to put a listener in the items of bottomMenu.
The Material.io documentation is incomplete in this part.
follow my code:
public class MainActivity extends AppCompatActivity {
private BottomAppBar bottomAppBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bottomAppBar = findViewById(R.id.bottomAppBar);
bottomAppBar.setNavigationOnClickListener(new *OnClickListener()* {
#Override
public void onClick(View view) {
Toast.makeText(MainActivity.this, "TEste da bottom bar", Toast.LENGTH_SHORT).show();
}
});
bottomAppBar.setOnMenuItemClickListener(new *OnMenuItemClickListener()* {
#Override
public boolean onMenuItemClick(MenuItem item) {
switch (item.getItemId()){
case R.id.item_relatorio:
Toast.makeText(getApplicationContext(),"Item relatorio",Toast.LENGTH_LONG).show();
break;
case R.id.item_sobre:
Toast.makeText(getApplicationContext(),"Item sobre",Toast.LENGTH_LONG).show();
break;
case R.id.item_sair:
Toast.makeText(getApplicationContext(),"Item sair",Toast.LENGTH_LONG).show();
break;
}
return false;
}
});
This is my activity_main.XML
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout
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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/greengrasstexture"
tools:context=".MainActivity">
<com.google.android.material.bottomappbar.BottomAppBar
android:id="#+id/bottomAppBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
app:fabCradleMargin="10dp"
app:fabCradleRoundedCornerRadius="10dp"
app:fabCradleVerticalOffset="10dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
tools:ignore="BottomAppBar">
<com.google.android.material.bottomnavigation.BottomNavigationView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/bottomNavigation"
android:layout_marginRight="0dp"
app:menu="#menu/menu_bottom"
android:background="#color/white"/>
</com.google.android.material.bottomappbar.BottomAppBar>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
follow my menu_bottom
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/item_CadLogin"
android:icon="#drawable/ic_login_24"
android:orderInCategory="100"
android:title="cadastro/login"
app:showAsAction="always"
/>
<item
android:id="#+id/item_preferencias"
android:icon="#drawable/ic_baseline_construction_24"
android:orderInCategory="200"
android:title="preferências"
app:showAsAction="always"
/>
<item
android:id="#+id/item_conta"
android:icon="#drawable/ic_baseline_account_circle_24"
android:orderInCategory="300"
android:title="Conta"
app:showAsAction="always"
/>
</menu>
Finally, from Material.io docs, the incomplete code:
(in kotlin i presume, but i need it in java)
bottomAppBar.setNavigationOnClickListener {
// Handle navigation icon press
}
bottomAppBar.setOnMenuItemClickListener { menuItem ->
when (menuItem.itemId) {
R.id.search -> {
// Handle search icon press
true
}
R.id.more -> {
// Handle more item (inside overflow menu) press
true
All the tutorials, stops focused just on how to build th BottomAppBar but not in how to implements click functionality to the menu icons.
Thanks in advance for any help.