ArgumentMismatchEvent

This event gets triggered when then input was invalid for the argument. For example the pattern does not match the user input.

It contains the following information in addition to the base event:

• the argument for which the input was invalid

Register event

This event belongs to argument, and it can be registered with Argument#setOnMismatch(ArgumentMismatchEventListener) with an ArgumentMismatchEventListener as parameter.

This can be done by the following way:

argument.setOnMismatch(event -> {
    //...
});