Can someone tell me the difference between two scenarios

Question

Case 1:

private TextView textview;
public class a {
....
textview = findViewById (R.id.textview);
.....
}
Case 2:
public class a {
TextView textview = findViewById (R.id.textview);
}

The textview is present within a ListView

Answer 1

The first case you created a global reference to a textview, so you can use it in any part of the class. The second case I'd a local reference you can only use it locally.