Why does JOptionPane.showInputDialog not require a parent component argument, but JOptionPane.showConfirmDialog does?

Question

JOptionPane.showInputDialog has a form that requires no parent component argument. JOptionPane.showConfirmDialog does. Why is this?

Answer 1

JOptionPane.showInputDialog has a form that requires no parent component argument. JOptionPane.showConfirmDialog does.

From showConfirmDialog(Component parentComponent,Object message)

parentComponent - determines the Frame in which the dialog is displayed; if null, or if the parentComponent has no Frame, a default Frame is used

So..

Why is this?

It isn't.