use Ajax

Hi friend,


Solve the Problem some steps to be remember :

1.Create two select menu.

For example :
State Menu and select the corresponding City Menu.


<h:panelGroup>
<h:selectOneMenu value="#{Register.select1}" valueChangeListener="#{Register.processValueChange}" immediate="true" onchange="this.form.submit()" >
<c:selectItems value="#{Register.stateList}"/>
</h:selectOneMenu>
</h:panelGroup>

<h:outputText value="City: " />
<h:panelGroup>
<h:selectOneMenu value="#{Register.select2}">
<c:selectItems value="#{Register.cityList}" />
</h:selectOneMenu>
</h:panelGroup>

2.Use "valueChangeListener" attributes of "selectOneMenu".

3.After Select state Event can be generate and "processValueChange" method call and set list of city.

public void processValueChange(ValueChangeEvent event){
try{
SelectItem option5 = new SelectItem("1", "abc");
cityList.add(option5);
}
}
catch(Exception e){
try{
con.close();
}
catch(Exception ex){}
}
}

For more information on JSF valueChangeListener visit to :

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

http://www.javajazzup.com/issue8/page54.shtml


Thanks