Which class is responsible for calling the replace method when managing fragments in Android?

The class responsible for calling the replace method when managing fragments in Android is FragmentTransaction. This class is used to perform operations with fragments, such as adding, replacing (replace), removing, etc. It is usually obtained through the beginTransaction() method of FragmentManager.

Example of usage:

FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.container, new MyFragment());
transaction.commit();