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JavaFX Alert Dialogs Tutorial

In this blog tutorial, you will learn to use the JavaFX alert dialogs. Alert is a subclass of the Dialog class. JavaFX alert dialog is used to show some information to the user. 

Types of Alert dialogs in JavaFX

Confirmation Alert

Alert alert = new Alert(Alert.AlertType.CONFIRMATION);
alert.setTitle("Confirmation alert Dialog");
alert.setContentText("Please confirm");
alert.setHeaderText("Confirmation");
alert.showAndWait();

Output

Warning Alert

Alert alert = new Alert(Alert.AlertType.WARNING);
alert.setTitle("Warning Dialog");
alert.setContentText("This is a warning alert!");
alert.setHeaderText("Warning alert");
alert.showAndWait();

Output

None Alert type

Alert alert = new Alert(Alert.AlertType.NONE);
alert.setTitle("None Alert type");
alert.setContentText("This is a none type alert!");
alert.setHeaderText(null);
alert.getDialogPane().getButtonTypes().add(ButtonType.CLOSE);
alert.showAndWait();

Output

Information Alert

Alert alert = new Alert(Alert.AlertType.INFORMATION);
alert.setTitle("Information Dialog");
alert.setContentText("This is an information alert!");
alert.setHeaderText("Information alert");
alert.showAndWait();

Output

Error Alert

Alert alert = new Alert(Alert.AlertType.ERROR);
alert.setTitle("Error Dialog");
alert.setContentText("This is an error alert!");
alert.setHeaderText("Error alert");
alert.showAndWait();

Output

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