how do i make a radio button to be checked when a page loads up?

[kay lin]

Hi all:
as you know, in html, if I want the radio button to be the checked when a page loads up, i'd do

<input type ="radio" name="r1" checked/>

how do i do that in struts? I don't think there is a checked field associated with
<html:radio> is there? please let me know...

thanks

[Karl Beowulph]

The way I did it was to pass a value to the .jsp through a bean with a pre-choosen value in there.

Following are code snippets

Action.java

...
MyDTO myDTO = new MyDTO();
...
myDTO.setRadio("valueOne");
request.setAttribute("myBean", myDTO);

webpage.jsp

<jsp:useBean 
id="myBean" 
scope="session"
class="myPackage.MyDTO"/> 
 
...
<html:radio name = "myBean" property = "radio" value = "valueOne">Value 1</html:radio>
<html:radio name = "myBean" property = "radio" value = "valueTwo">Value 2</html:radio>
...

When the page loads, the radio which matches the value will be highlighted.

As far as having it on without a javaBean, I don't know of a way to do that.

[Mathur Neni]

I think, javascript can be one of the solution for selecting a radio button.

[Marc Peabody]

You don't need any special tricks. Something like this works for prepop:

<html:radio property="gender" value="male">Male</html:radio>
<html:radio property="gender" value="female">Female</html:radio>

ActionForm needs a getter/setter for gender (as usual).

If you wanted it to default to Male at the beginning, make "male" the value of String gender in your ActionForm.

[Prakash S.V.S]

Either through javascript or with the help of ActionForm's setter method before loading the page can do this.