When a new window is created, specifically a JOptionPane such as in the SwingSet2 demo, no event is forwarded via the Java Accessibility Utilities indicating that this event occured. This is critical if products like screen magnifiers are going to move the magnification region to encompass the newly created and drawn window/dialog.

Verify this by running SwingSet2 with JavaMonitor & AccessibilityMonitor, and monitoring Component, Container, and Java Accessibility API events. Then go to the JOptionPane example, and click on one of the five buttons to bring up one of the five different flavors of JOptionPane. You'll notice that no events are fired that JavaMonitor or AccessibilityMonitor report for these events (you will need to dismiss the dialogs before the two monitor programs can update their displays).