Java: way to completely disable any Swing unwanted beeps?

Question

I am working on a fairly complex Java application using Swing.

On some occasions there are unwanted beeps without any user intervention. No crash, application keeps

Answer 1

In Swing you need to override the LookAndFeel as follows:

UIManager.setLookAndFeel(new NimbusLookAndFeel() {

  @Override
  public void provideErrorFeedback(Component component) {

    // Your beep decision goes here

    // You want error feedback 
    super.provideErrorFeedback(component);

  }
});

Typically your beep decision would reference some kind of external configuration/preferences flag for your application.