How can I write the action attribute of a form dynamically using JSP

I would like to do something like this:
If the 'Accept-Language' of the http request is 'en', write out this in JSP:
<form name='myform action="http://127.0.0.1/myservlet/en/>
else if
the 'accept-language' is 'es', write out this instead:
<form name='myform action="http://127.0.0.1/myservlet/es/>
else if no match
<form name='myform action="http://127.0.0.1/myservlet/default/>
How can I do that in JSP? I think this is simple enough so that I don' t need to use any of the Java Web framework/Java Beans.
Thank you for any help.

you can use a simple javascript for this:
function setAction(lang){
   if(lang=="en"){
     document.forms[0].action="putYourservletUrlhere";
   }else if(lang=="es"){
     document.forms[0].action="putYourservletUrlhere";
   }else{
     document.forms[0].action="putYourservletUrlhere";
}

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