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## org.apache.struts2.components
Class Radio

    java.lang.Object
      org.apache.struts2.components.Component
          org.apache.struts2.components.UIBean
              org.apache.struts2.components.ListUIBean
                  org.apache.struts2.components.Radio

    public class Radio

extends ListUIBean

Render a radio button input field.

Examples

In this example, a radio control is displayed with a list of genders. The gender list is built from attribute id=genders. The framework calls getGenders() which will return a Map. For examples using listKey and listValue attributes, see the section select tag. The default selected one will be determined (in this case) by the getMale() method in the action class which should retun a value similar to the key of the getGenters() map if that particular gender is to be selected.

     <s:action name="GenderMap" id="genders"/>
     <s:radio label="Gender" name="male" list="#genders.genders"/>

Field Summary
`static String` | `TEMPLATE`

Fields inherited from class org.apache.struts2.components.ListUIBean
`list, listKey, listValue, throwExceptionOnNullValueAttribute`

Fields inherited from class org.apache.struts2.components.UIBean
`accesskey, cssClass, cssStyle, defaultTemplateDir, defaultUITheme, disabled, key, label, labelPosition, name, onblur, onchange, onclick, ondblclick, onfocus, onkeydown, onkeypress, onkeyup, onmousedown, onmousemove, onmouseout, onmouseover, onmouseup, onselect, request, required, requiredposition, response, tabindex, template, templateDir, templateEngineManager, templateSuffix, theme, title, tooltip, tooltipConfig, value`

Fields inherited from class org.apache.struts2.components.Component
`actionMapper, COMPONENT_STACK, id, parameters, stack`

Constructor Summary
`Radio(ValueStack stack, HttpServletRequest request, HttpServletResponse response)`

Method Summary
`protected String` | `getDefaultTemplate()` A contract that requires each concrete UI Tag to specify which template should be used as a default.

Methods inherited from class org.apache.struts2.components.ListUIBean
`contains, evaluateExtraParams, getValueClassType, setList, setListKey, setListValue, setThrowExceptionOnNullValueAttribute`

Methods inherited from class org.apache.struts2.components.UIBean
`addFormParameter, buildTemplateName, enableAncestorFormCustomOnsubmit, end, escape, evaluateNameValue, evaluateParams, getTemplate, getTemplateDir, getTheme, getTooltipConfig, mergeTemplate, populateComponentHtmlId, setAccesskey, setCssClass, setCssStyle, setDefaultTemplateDir, setDefaultUITheme, setDisabled, setKey, setLabel, setLabelposition, setName, setOnblur, setOnchange, setOnclick, setOndblclick, setOnfocus, setOnkeydown, setOnkeypress, setOnkeyup, setOnmousedown, setOnmousemove, setOnmouseout, setOnmouseover, setOnmouseup, setOnselect, setRequired, setRequiredposition, setTabindex, setTemplate, setTemplateDir, setTemplateEngineManager, setTheme, setTitle, setTooltip, setTooltipConfig, setValue`

Methods inherited from class org.apache.struts2.components.Component
`addAllParameters, addParameter, altSyntax, copyParams, determineActionURL, determineNamespace, end, fieldError, findAncestor, findString, findString, findValue, findValue, findValue, getComponentStack, getId, getParameters, getStack, popComponentStack, setActionMapper, setId, start, toString, usesBody`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### TEMPLATE

    public static final String TEMPLATE

See Also:
  Constant Field Values

Constructor Detail

### Radio

    public Radio(ValueStack stack,
                 HttpServletRequest request,
                 HttpServletResponse response)

Method Detail

### getDefaultTemplate

    protected String getDefaultTemplate()

  Description copied from class: `UIBean`
  A contract that requires each concrete UI Tag to specify which template should be used as a default. For example, the CheckboxTab might return "checkbox.vm" while the RadioTag might return "radio.vm". This value not begin with a '/' unless you intend to make the path absolute rather than relative to the current theme.

  Specified by:
    `getDefaultTemplate` in class `UIBean`
  Returns:
    The name of the template to be used as the default.

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