How to pick the selected options in the spinner of another activity

Class I want to check the spinner place, so I can only move to another page if I have selected something, I would use the option selected in Spinner instead in another class.

public static Spinner lugar;
public static EditText a;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_inicial);
    Spinner lugar = findViewById(R.id.spinneronde);
    EditText a = findViewById(R.id.editText);
    String[] lugares = new String[]{ "Em casa", "No trabalho","Na rua", 
"Outro"};
    ArrayAdapter<String> adapter = new ArrayAdapter<>(this, 
R.layout.support_simple_spinner_dropdown_item, lugares);
    lugar.setAdapter(adapter);
    Button continuar = findViewById(R.id.Continuar_Button);
Inicial user = new Inicial();

}
public void continuar(View view)
{
   if (lugar.getSelectedItem() != null && a != null)
    {

       startActivity(new Intent(this, Menu.class));
    }
    else
   {
        AlertDialog.Builder alertDialog =  new AlertDialog.Builder(this);
        alertDialog.setMessage("Por Favor preencha todas as perguntas. :)");
        alertDialog.setCancelable(true);
   }

}

Class I want to get the option that was selected, but, I can not get the value of the Spinner place to use in that.

  @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_menu);
    Spinner lug = Inicial.lugar;
    String selectedop = lug.toString();
    if(selectedop == "Em casa")
    {
     AlertDialog.Builder alertDialog =  new AlertDialog.Builder(this);
     alertDialog.setMessage("CASA :)");
     alertDialog.setCancelable(true);
    }
    }
    }