[12:7] extends: Node, Control, Labeled, ToggleButton
Represents a JavaFX RadioButton, a selectable button in a group where only one can be selected. The RadioButton class extends Node, Control, Labeled, and ToggleButton.
RadioButton (Val)
Initializes a new RadioButton instance with the specified label text. If no text is provided, the label defaults to an empty string.
Val The text label for the RadioButton, or null for a blank label.this object