set icon to fab programmatically in android studio

1if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
2            floatingActionButton.setImageDrawable(getResources().getDrawable(R.drawable.ic_full_sad, context.getTheme()));
3        } else {
4            floatingActionButton.setImageDrawable(getResources().getDrawable(R.drawable.ic_full_sad));
5    }
6

1floatingActionButton.setImageDrawable(ContextCompat.getDrawable(getContext(), R.drawable.ic_full_sad));