Define own feedback messages in Wicket

Question

How do I define my own feedback messages in Wicket? For example: if I give an incorrect username, I want to get an error message like \"The user name in incorrect, try to login

Answer 1

@user1090145: I've used overloaded Component's error() method in Validator's class:

private void error(IValidatable validatable, String errorKey) {
    ValidationError error = new ValidationError();
    error.addMessageKey(errorKey);
    validatable.error(error);
}

and invoked it in validate() by

error(validatable, "your-form.field.text-id");

Properties your-form.field.text-id must be defined in YourPage.properties

Sources: Create custom validator in Wicket and Form validation messages