What do we call the thing inside the parenthesis i.e., "new AdpaterView"

Question

spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

switch (position) {
case 0:
constraintLayout.setBackgroundColor(Color.parseColor("#0091EA"));
break;
case 1:
constraintLayout.setBackgroundColor(Color.parseColor("#5CF89D"));
break;
case 2:
constraintLayout.setBackgroundColor(Color.parseColor("#FFEC87"));
break;
case 3:
constraintLayout.setBackgroundColor(Color.parseColor("#F9A86C"));
break;
case 4:
constraintLayout.setBackgroundColor(Color.parseColor("#C39AFC"));
...

https://code.sololearn.com/cBRg0hUDmrFE/?ref=app

Answer 1

The stuff in parenthesis in calls to functions or methods is called the arguments.
If you refer to "new <Class name>" part, it's a call to a class constructor, or an object instantiation.