Hi Sandhya

I have implemented logic implemented in above links, but couldn't get required result. Here is my code.

<apex:page controller="ExtPosition">
<script>
function product(){productSearch();}
</script>

  <apex:form >
  Please Input Data : <apex:inputText value="{!EnterData}"/>
  <apex:commandButton value="Submit" action="{!EnterData}" rerender="Outp"/>
<apex:outputPanel id="Outp"> <br/>
 Your Output is :  <apex:OutputText value="{!OutputString}" /> <br/>
</apex:outputPanel>
 <apex:actionFunction action="{!productSearch}" name="productSearch" reRender="OutAnother"/>   
 <br/>
 <apex:pageBlock title="Lead Form - Enter lead details" id="OutAnother"> 
 <apex:inputText value="{!name}"> </apex:inputText>  
 <apex:commandButton value="Save" onclick="product();"/> <br/><br/>
 <apex:outputText value="{!firstname}"> {!firstname}</apex:outputText>  

 </apex:pageBlock>
 
</apex:form> 
</apex:page>


//Controller
public class ExtPosition{

public List<String> title {get;set;}
public String OutputString {get;set;}
public String EnterData {get;set;}
public String name{get;set;}
public String firstname{get;set;}
List<Position__c> pos = new List<Position__c>([select Name,Position_title__c from Position__c]);

public ExtPosition()
{
   title = new List<String>();
   {
   For (Position__c p : pos)
   {
    title.add(p.Position_title__c);
   }

   }
}

 public void EnterData()
 {
    OutputString=EnterData;
 }

 public void productSearch()
 {
     firstname='Arun';

 }   
    
}

Arun