Hi friend,

For solving the problem some points to be remember :

For example You select a country then its corresponding city selected.

Use attribute "valueChangeListener" call the method "processValueChange1"

on select the country.

"You add the code in the form part"
<tr>
<h:selectOneMenu id="locationcountry" value="#{beanclass.locationcountry}" valueChangeListener="#{beanclass.processValueChange1}" immediate="true" onchange="this.form.submit()" styleClass="inputbox" style="width:150px">
<s:selectItems value="#{beanclass.countryList}" var="country" label="#{country.country}" itemValue="#{country.id}"/>
</h:selectOneMenu>
</tr>

<tr>
<h:selectOneMenu id="locationcity" value="#{postjobHome.instance.locationcity}" styleClass="inputbox" style="width:150px">
<s:selectItems value="#{previewjob.cityList}" var="city" label="#{city.cityname}" itemValue="#{city.id}"/>
</h:selectOneMenu>
</tr>

"You add the code in the beanclass part"
List countryList= new ArrayList();
List cityList= new ArrayList();


public List getCountryList(){
findCountries();

return countryList;
}

public List getCityList(){
if(cityList.size() == 0){

findCities("1");
}

return cityList;
}


public void processValueChange1(ValueChangeEvent vce){
Integer countryid = (Integer) vce.getNewValue();

findCities(countryid.toString());


}


public void findCities(String countryid) {

List allCityList = "Array List of City"


ListIterator li = allCityList.listIterator();
cityList.clear();
while(li.hasNext()){
City c = (City)li.next();
System.out.println("c.getCityname()" + c.getCityname());
cityList.add(c);
}
}

For more information on JSF visit to :

http://www.roseindia.net/jsf/

http://www.roseindia.net/jsf/selectOneMenu.shtml

http://www.roseindia.net/jsf/valueChangeListener.shtml

http://www.roseindia.net/software-tutorials/detail/19882

Thanks