android studio toString method is not found

问题

i'm working on a project in android studio but when i want to use toString() method it shows : cannot resolve method 'toString()'.please check the image.enter image description here

etLPassword = findViewById(R.id.etLPassword);
    String password = etLPassword.getText().toString();

tostring() appears with red color

来源：https://stackoverflow.com/questions/59119381/android-studio-tostring-method-is-not-found