how to get current date time in android

                                    import java.time.*;
LocalDateTime datetime = LocalDateTime.now(); 

                                    String currentDateTimeString = java.text.DateFormat.getDateTimeInstance().format(new Date());

// textView is the TextView view that should display it
textView.setText(currentDateTimeString);

                                      SimpleDateFormat sdf = new SimpleDateFormat("ddMMyyyy_HHmmss", Locale.getDefault());
                String currentDateandTime = sdf.format(new Date());
                System.out.println("currentDateandTime" + currentDateandTime);

                                    import java.util.Calendar

Date currentTime = Calendar.getInstance().getTime();

                                    import java.time.*;
LocalDate date = LocalDate.now();