Some Issues:-

--> How to call a component from VF page.

    <c:ComponentName/>

How to insert a field(record) into object from Vf Page.

VF page:-

----

<apex:page controller="commentspage" showHeader="false" sidebar="false" showChat="false" standardStylesheets="false" >

  <apex:form > <br/><br/>

        <div align="center">

         <apex:inputTextarea value="{!CommentText}"/><br/><br/>

         <apex:commandButton value="Save" action="{!save}"/>

        </div>

  </apex:form>

</apex:page>

Apex class

--------

public class commentspage {

    public String CommentText{get;set;}

    Comments__c comm=new Comments__c();

     public void save() {

        comm.Comments_Text__c=CommentText;

        insert comm;

    }

}

-->How to Print Radio buttons list in vertical formate.

<apex:selectRadio id="typical" onclick="alert(this.value);" layout="pageDirection"> <br/>

            <apex:selectOption itemValue="0" itemLabel="Increasing Revenue" />

            <apex:selectOption itemValue="1" itemLabel="Reducing Costs" />

            <apex:selectOption itemValue="2" itemLabel="Reducing Time, Effort or Cycles for Employees" />

            <apex:selectOption itemValue="3" itemLabel="Reducing Time, Effort or Cycles for Assets" />

            <apex:selectOption itemValue="4" itemLabel="Reducing RIsk" />

   </apex:selectRadio>

 

Here Layout=”pageDirection” prints in Vertical formate.

Alert(this.value) gives the alert box popup without.

 

è  -->How To make the radio buttons by default true.

We have to mention the lable value on constructor. like see below code.

Vf page:-

    <apex:selectRadio value="{!etime}" layout="pagedirection">

                <apex:selectOptions value="{!etimeslot}"/>

    </apex:selectRadio><p/>

Apex class:-

             public with sharing class Test5 {

     public String etime{get;set;}

     public Test5(ApexPages.StandardController controller) {

        etime='0.30';

    }

public List<SelectOption> getetimeslot() {

         List<selectOption> options = new List<selectOption>();

             options.add(new selectOption('0.30','Half-An-Hour'));

             options.add(new selectOption('1.0','One-Hour'));

         return options;

    } 

                }