I want to transfer some data like "editText1Double" and "sum" to another fragment (SecondFragment) that will use those data. How would I do that?
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.first_fragment, container, false);
    editText1 = (EditText) v.findViewById(R.id.editText1);
    editText2 = (EditText) v.findViewById(R.id.editText2);
    editText3 = (EditText) v.findViewById(R.id.editText3);
    textView = (TextView) v.findViewById(R.id.textView);
    calculateButton = (Button) v.findViewById(R.id.calculateButton);
    calculateButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            editText1Double = Double.parseDouble(editText1.getText().toString());
            editText2Double = Double.parseDouble(editText2.getText().toString());
            editText3Double = Double.parseDouble(editText3.getText().toString());
            sum = editText1Double + editText2Double + editText3Double;
        }
    });