The RadioFormInput class represents a radio button input type in an HTML form. The radio button may be initialized as selected when constructed.
A set of radio buttons with the same control name make a radio button group. The RadioFormInputGroup class creates radio button groups. Only one radio button within the group may be selected at any time. Also, a specific button may be initialized as selected when the group is constructed.
The following code example shows you how to create a RadioFormInput object:
RadioFormInput radio = new RadioFormInput("age", "twentysomething", "Age 20 - 29", true);
System.out.println(radio.getTag());
The above code example generates the following tag:
<input type="radio" name="age" value="twentysomething" checked="checked" />